{"id":2356,"date":"2026-09-02T01:00:32","date_gmt":"2026-09-01T18:00:32","guid":{"rendered":"https:\/\/yourapx.com\/?p=2356"},"modified":"2026-09-02T01:00:32","modified_gmt":"2026-09-01T18:00:32","slug":"ic-on-ap-tuyen-tinh-ldo","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=2356","title":{"rendered":"IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO l\u00e0 g\u00ec? K\u00fd hi\u1ec7u, c\u00e1ch m\u1eafc, c\u00e1ch \u0111o v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

1. IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO l\u00e0 g\u00ec v\u00e0 c\u00f3 vai tr\u00f2 g\u00ec?<\/h2>\n

IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO l\u00e0 linh ki\u1ec7n \u0111\u1ea3m nhi\u1ec7m m\u1ed9t ch\u1ee9c n\u0103ng x\u00e1c \u0111\u1ecbnh trong m\u1ea1ch. Mu\u1ed1n nh\u1eadn d\u1ea1ng ch\u00ednh x\u00e1c ph\u1ea3i k\u1ebft h\u1ee3p t\u00ean linh ki\u1ec7n, k\u00fd hi\u1ec7u tr\u00ean s\u01a1 \u0111\u1ed3, m\u00e3 in tr\u00ean th\u00e2n, s\u1ed1 ch\u00e2n v\u00e0 v\u1ecb tr\u00ed c\u1ee7a n\u00f3 trong kh\u1ed1i m\u1ea1ch.<\/p>\n

Ph\u1ea7n quan tr\u1ecdng nh\u1ea5t l\u00e0 x\u00e1c \u0111\u1ecbnh linh ki\u1ec7n n\u00e0y \u0111ang l\u00e0m nhi\u1ec7m v\u1ee5 g\u00ec trong kh\u1ed1i m\u1ea1ch tr\u01b0\u1edbc khi \u0111o ho\u1eb7c ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n

2. K\u00fd hi\u1ec7u IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/h2>\n

K\u00fd hi\u1ec7u v\u00e0 t\u00ean ch\u00e2n c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO thay \u0111\u1ed5i theo \u0111\u00fang ch\u1ee7ng lo\u1ea1i. Kh\u00f4ng suy ra ch\u00e2n linh ki\u1ec7n ch\u1ec9 t\u1eeb h\u00ecnh d\u00e1ng; c\u1ea7n \u0111\u1ed1i chi\u1ebfu s\u01a1 \u0111\u1ed3 v\u00e0 datasheet c\u1ee7a \u0111\u00fang m\u00e3.<\/p>\n

M\u1ea1ch t\u00edch h\u1ee3p th\u01b0\u1eddng mang m\u00e3 U ho\u1eb7c IC. Khi \u0111\u1ecdc s\u01a1 \u0111\u1ed3 ph\u1ea3i \u0111\u1ed1i chi\u1ebfu c\u1ea3 s\u1ed1 ch\u00e2n, t\u00ean ch\u00e2n v\u00e0 ngu\u1ed3n c\u1ea5p c\u1ee7a \u0111\u00fang m\u00e3 linh ki\u1ec7n.<\/p>\n

\"K\u00fd
K\u00fd hi\u1ec7u v\u00e0 quy \u01b0\u1edbc ch\u00e2n c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/figcaption><\/figure>\n

3. C\u1ea5u t\u1ea1o, h\u00ecnh d\u1ea1ng v\u00e0 ki\u1ec3u \u0111\u00f3ng g\u00f3i<\/h2>\n

C\u1ea5u t\u1ea1o c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO ph\u1ee5 thu\u1ed9c c\u00f4ng ngh\u1ec7 ch\u1ebf t\u1ea1o v\u00e0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng. C\u00e1c chi ti\u1ebft c\u00f3 th\u1ec3 quan s\u00e1t t\u1eeb \u1ea3nh ch\u1ec9 d\u00f9ng \u0111\u1ec3 nh\u1eadn d\u1ea1ng s\u01a1 b\u1ed9, kh\u00f4ng thay th\u1ebf m\u00e3 linh ki\u1ec7n v\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt.<\/p>\n

Nh\u1eefng ki\u1ec3u v\u1ecf v\u00e0 ki\u1ec3u l\u1eafp th\u01b0\u1eddng g\u1eb7p g\u1ed3m:<\/p>\n

    \n
  • D\u1ea1ng xuy\u00ean l\u1ed7 (THT) d\u00f9ng ch\u00e2n c\u1eafm<\/li>\n
  • D\u1ea1ng g\u1eafn b\u1ec1 m\u1eb7t (SMD\/SMT)<\/li>\n
  • Module ho\u1eb7c package c\u00f4ng su\u1ea5t c\u00f3 t\u1ea3n nhi\u1ec7t<\/li>\n<\/ul>\n
    \"IC
    \u1ea2nh th\u1ef1c t\u1ebf 1 c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO d\u00f9ng \u0111\u1ec3 nh\u1eadn bi\u1ebft h\u00ecnh d\u1ea1ng t\u1ed5ng th\u1ec3.<\/figcaption><\/figure>\n

    4. C\u00e1c ch\u1ee7ng lo\u1ea1i ph\u1ed5 bi\u1ebfn<\/h2>\n

    M\u1ed7i ch\u1ee7ng lo\u1ea1i c\u00f3 \u01b0u \u0111i\u1ec3m, gi\u1edbi h\u1ea1n v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng kh\u00e1c nhau; kh\u00f4ng n\u00ean thay l\u1eabn ch\u1ec9 v\u00ec c\u00f3 h\u00ecnh d\u1ea1ng g\u1ea7n gi\u1ed1ng.<\/p>\n

      \n
    • Lo\u1ea1i t\u00edn hi\u1ec7u<\/li>\n
    • Lo\u1ea1i c\u00f4ng su\u1ea5t<\/li>\n
    • Lo\u1ea1i ch\u00ednh x\u00e1c ho\u1eb7c chuy\u00ean d\u1ee5ng<\/li>\n<\/ul>\n
      \"IC
      \u1ea2nh th\u1ef1c t\u1ebf 2 c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

      5. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec3u<\/h2>\n
        \n
      • \u0110i\u1ec7n \u00e1p v\u00e0 d\u00f2ng l\u00e0m vi\u1ec7c:<\/strong> x\u00e1c \u0111\u1ecbnh v\u00f9ng l\u00e0m vi\u1ec7c an to\u00e0n; c\u1ea7n ph\u00e2n bi\u1ec7t tr\u1ecb s\u1ed1 l\u00e0m vi\u1ec7c li\u00ean t\u1ee5c v\u1edbi gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i.<\/li>\n
      • C\u00f4ng su\u1ea5t t\u1ed5n hao:<\/strong> x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng nhi\u1ec7t linh ki\u1ec7n c\u00f3 th\u1ec3 ch\u1ecbu trong \u0111i\u1ec1u ki\u1ec7n quy \u0111\u1ecbnh m\u00e0 kh\u00f4ng b\u1ecb qu\u00e1 nhi\u1ec7t.<\/li>\n
      • D\u1ea3i nhi\u1ec7t \u0111\u1ed9:<\/strong> cho bi\u1ebft ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 cho ph\u00e9p v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, tu\u1ed5i th\u1ecd.<\/li>\n
      • Package, k\u00edch th\u01b0\u1edbc v\u00e0 s\u01a1 \u0111\u1ed3 ch\u00e2n:<\/strong> quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng l\u1eafp v\u1eeba bo m\u1ea1ch, th\u1ee9 t\u1ef1 ch\u00e2n v\u00e0 \u0111\u01b0\u1eddng t\u1ea3n nhi\u1ec7t; h\u00ecnh d\u00e1ng gi\u1ed1ng nhau ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 thay th\u1ebf.<\/li>\n<\/ul>\n
        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 3 c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        6. C\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/h2>\n

        C\u00e1c c\u00f4ng th\u1ee9c d\u01b0\u1edbi \u0111\u00e2y m\u00f4 t\u1ea3 quan h\u1ec7 gi\u1eefa nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng c\u1ee7a linh ki\u1ec7n. U l\u00e0 \u0111i\u1ec7n \u00e1p, I l\u00e0 d\u00f2ng \u0111i\u1ec7n, R l\u00e0 \u0111i\u1ec7n tr\u1edf, P l\u00e0 c\u00f4ng su\u1ea5t, E ho\u1eb7c W l\u00e0 n\u0103ng l\u01b0\u1ee3ng, f l\u00e0 t\u1ea7n s\u1ed1 v\u00e0 t l\u00e0 th\u1eddi gian; \u0111\u01a1n v\u1ecb l\u1ea7n l\u01b0\u1ee3t l\u00e0 V, A, \u03a9, W, J, Hz v\u00e0 s.<\/p>\n

        \n
        C\u00f4ng su\u1ea5t \u0111i\u1ec7n<\/figcaption>
        P = U \u00d7 I<\/div>\n<\/figure>\n
        N\u0103ng l\u01b0\u1ee3ng<\/figcaption>
        E = P \u00d7 t<\/div>\n<\/figure>\n
        C\u00f4ng th\u1ee9c 3:<\/strong> C\u00e1c c\u00f4ng th\u1ee9c ri\u00eang ph\u1ea3i l\u1ea5y theo \u0111\u00fang nguy\u00ean l\u00fd v\u00e0 datasheet c\u1ee7a linh ki\u1ec7n<\/div>\n<\/div>\n

        K\u00fd hi\u1ec7u c\u00f3 ch\u1ec9 s\u1ed1 d\u01b0\u1edbi d\u00f9ng \u0111\u1ec3 ch\u1ec9 \u0111\u00fang v\u1ecb tr\u00ed ho\u1eb7c tr\u1ea1ng th\u00e1i \u0111o, ch\u1eb3ng h\u1ea1n Ura<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra v\u00e0 Ushunt<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p tr\u00ean \u0111i\u1ec7n tr\u1edf shunt. V\u1edbi k\u00fd hi\u1ec7u ri\u00eang c\u1ee7a t\u1eebng h\u1ecd linh ki\u1ec7n, c\u1ea7n \u0111\u1ecdc \u0111\u1ecbnh ngh\u0129a ngay trong datasheet.<\/p>\n

        C\u00f4ng th\u1ee9c l\u00fd t\u01b0\u1edfng ch\u1ec9 \u0111\u00fang trong \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 n\u00eau. Khi ch\u1ecdn linh ki\u1ec7n th\u1eadt ph\u1ea3i t\u00ednh th\u00eam dung sai, nhi\u1ec7t \u0111\u1ed9, t\u1ea7n s\u1ed1, t\u1ea3i v\u00e0 gi\u1edbi h\u1ea1n trong datasheet.<\/p>\n

        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 4 c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        7. C\u00e1c c\u00e1ch m\u1eafc IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO trong m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/h2>\n

        C\u00e1c c\u00e1ch m\u1eafc \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb d\u1ec5 nh\u1eadn bi\u1ebft \u0111\u1ebfn \u1ee9ng d\u1ee5ng n\u00e2ng cao. \u1ede m\u1ed7i s\u01a1 \u0111\u1ed3, h\u00e3y theo d\u00f5i \u0111i\u1ec3m n\u1ed1i ngu\u1ed3n, mass, \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra v\u00e0 chi\u1ec1u d\u00f2ng \u0111i\u1ec7n tr\u01b0\u1edbc khi t\u00ednh to\u00e1n.<\/p>\n

        \n
        \n

        C\u00e1c c\u00e1ch m\u1eafc th\u01b0\u1eddng d\u00f9ng<\/h3>\n

        1. M\u1eafc theo m\u1ea1ch \u1ee9ng d\u1ee5ng c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> Ch\u00e2n ngu\u1ed3n, ch\u00e2n t\u00edn hi\u1ec7u, t\u1ea3i v\u00e0 linh ki\u1ec7n ph\u1ee5 tr\u1ee3 c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO ph\u1ea3i \u0111\u01b0\u1ee3c n\u1ed1i theo datasheet \u0111\u00fang m\u00e3.<\/p>\n<\/section>\n<\/div>\n

        8. V\u00ed d\u1ee5 t\u00ednh to\u00e1n v\u00e0 \u1ee9ng d\u1ee5ng<\/h2>\n

        Khi thay IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO, k\u1ef9 thu\u1eadt vi\u00ean c\u1ea7n x\u00e1c \u0111\u1ecbnh vai tr\u00f2 c\u1ee7a linh ki\u1ec7n trong m\u1ea1ch, \u0111o \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c th\u1ef1c t\u1ebf r\u1ed3i m\u1edbi ch\u1ecdn m\u00e3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n

        \"H\u00ecnh
        H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o 1: H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o v\u1ec1 IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO. Ngu\u1ed3n: ON_Analog_Integrated_Circuits, trang 3327.<\/figcaption><\/figure>\n
        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 5 c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        9. C\u00e1ch \u0111\u1ecdc m\u00e3 v\u00e0 datasheet<\/h2>\n

        Tra \u0111\u00fang m\u00e3 \u0111\u1ea7y \u0111\u1ee7, h\u00e3ng v\u00e0 h\u1eadu t\u1ed1 package. \u01afu ti\u00ean b\u1ea3ng th\u00f4ng s\u1ed1 \u0111i\u1ec7n, \u0111i\u1ec1u ki\u1ec7n \u0111o, gi\u1edbi h\u1ea1n nhi\u1ec7t v\u00e0 m\u1ea1ch \u1ee9ng d\u1ee5ng do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/p>\n

        H\u00e3y ph\u00e2n bi\u1ec7t th\u00f4ng s\u1ed1 l\u00e0m vi\u1ec7c khuy\u1ebfn ngh\u1ecb v\u1edbi gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i. Gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ee9c n\u00ean duy tr\u00ec trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n

        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 6 c\u1ee7a IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        10. C\u00e1ch \u0111o v\u00e0 ki\u1ec3m tra tr\u00ean bo m\u1ea1ch<\/h2>\n
          \n
        1. Ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 h\u1ebft \u0111i\u1ec7n t\u00edch tr\u01b0\u1edbc khi \u0111o \u0111i\u1ec7n tr\u1edf ho\u1eb7c th\u00f4ng m\u1ea1ch<\/li>\n
        2. X\u00e1c \u0111\u1ecbnh \u0111\u00fang ch\u00e2n ngu\u1ed3n, mass, \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra<\/li>\n
        3. So s\u00e1nh \u0111i\u1ec7n \u00e1p v\u00e0 d\u1ea1ng s\u00f3ng v\u1edbi s\u01a1 \u0111\u1ed3 ho\u1eb7c m\u1ed9t m\u1ea1ch t\u1ed1t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/li>\n<\/ol>\n

          Khi \u0111o tr\u1ef1c ti\u1ebfp tr\u00ean bo, c\u00e1c linh ki\u1ec7n n\u1ed1i v\u1edbi c\u00f9ng n\u00fat m\u1ea1ch c\u00f3 th\u1ec3 l\u00e0m k\u1ebft qu\u1ea3 kh\u00e1c tr\u1ecb s\u1ed1 ri\u00eang c\u1ee7a linh ki\u1ec7n. N\u1ebfu c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp, ch\u1ec9 th\u00e1o m\u1ed9t \u0111\u1ea7u ho\u1eb7c ch\u00e2n \u0111o ph\u00f9 h\u1ee3p sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 h\u1ebft \u0111i\u1ec7n t\u00edch.<\/p>\n

          \"H\u00ecnh
          H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o 2: H\u00ecnh minh h\u1ecda \u0111o ki\u1ec3m IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO. Ngu\u1ed3n: ON_Analog_Integrated_Circuits, trang 262.<\/figcaption><\/figure>\n

          11. D\u1ea1ng h\u01b0 h\u1ecfng v\u00e0 nguy\u00ean nh\u00e2n<\/h2>\n

          D\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 quan s\u00e1t ho\u1eb7c \u0111o \u0111\u01b0\u1ee3c<\/h3>\n
            \n
          • Ch\u1eadp, \u0111\u1ee9t ho\u1eb7c r\u00f2 \u0111i\u1ec7n<\/li>\n
          • Sai ch\u1ee9c n\u0103ng khi c\u00f3 t\u1ea3i ho\u1eb7c khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng<\/li>\n
          • N\u1ee9t v\u1ee1, ch\u00e1y ho\u1eb7c oxy h\u00f3a ch\u00e2n<\/li>\n<\/ul>\n

            Nh\u1eefng nguy\u00ean nh\u00e2n c\u1ea7n ki\u1ec3m tra<\/h3>\n
              \n
            • Qu\u00e1 \u0111i\u1ec7n \u00e1p, qu\u00e1 d\u00f2ng ho\u1eb7c qu\u00e1 nhi\u1ec7t<\/li>\n
            • Xung \u0111i\u1ec7n v\u00e0 ngu\u1ed3n c\u1ea5p kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/li>\n
            • \u1ea8m, l\u00e3o h\u00f3a ho\u1eb7c \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc<\/li>\n<\/ul>\n

              M\u1ed9t d\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u nguy\u00ean nh\u00e2n. Ch\u1ec9 k\u1ebft lu\u1eadn linh ki\u1ec7n h\u1ecfng sau khi k\u1ebft h\u1ee3p k\u1ebft qu\u1ea3 \u0111o, s\u01a1 \u0111\u1ed3 m\u1ea1ch v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh.<\/p>\n

              12. C\u00e1ch l\u1ef1a ch\u1ecdn linh ki\u1ec7n thay th\u1ebf<\/h2>\n
                \n
              • \u0110\u00fang ch\u1ee9c n\u0103ng v\u00e0 s\u01a1 \u0111\u1ed3 ch\u00e2n<\/li>\n
              • Th\u00f4ng s\u1ed1 gi\u1edbi h\u1ea1n kh\u00f4ng th\u1ea5p h\u01a1n y\u00eau c\u1ea7u<\/li>\n
              • Package v\u00e0 kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t ph\u00f9 h\u1ee3p<\/li>\n
              • Ki\u1ec3m tra l\u1ea1i to\u00e0n m\u1ea1ch tr\u01b0\u1edbc khi c\u1ea5p ngu\u1ed3n<\/li>\n<\/ul>\n

                13. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

                C\u00f3 th\u1ec3 \u0111o IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO tr\u1ef1c ti\u1ebfp tr\u00ean bo m\u1ea1ch kh\u00f4ng?<\/h3>\n

                C\u00f3 th\u1ec3 ki\u1ec3m tra s\u01a1 b\u1ed9 sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 \u0111i\u1ec7n t\u00edch. Tuy nhi\u00ean, nh\u1eefng nh\u00e1nh m\u1ea1ch n\u1ed1i song song ho\u1eb7c linh ki\u1ec7n b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 l\u00e0m sai k\u1ebft qu\u1ea3; khi c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp ph\u1ea3i t\u00e1ch ch\u00e2n ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ed1i chi\u1ebfu s\u01a1 \u0111\u1ed3.<\/p>\n

                C\u00f3 th\u1ec3 d\u00f9ng linh ki\u1ec7n c\u00f3 th\u00f4ng s\u1ed1 cao h\u01a1n \u0111\u1ec3 thay th\u1ebf kh\u00f4ng?<\/h3>\n

                Tr\u01b0\u1edbc h\u1ebft, linh ki\u1ec7n thay th\u1ebf ph\u1ea3i \u0111\u00fang ch\u1ee9c n\u0103ng v\u00e0 tr\u1ecb s\u1ed1 ch\u00ednh. M\u1ed9t s\u1ed1 gi\u1edbi h\u1ea1n nh\u01b0 c\u00f4ng su\u1ea5t ho\u1eb7c \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 ch\u1ecdn cao h\u01a1n, nh\u01b0ng k\u00edch th\u01b0\u1edbc, \u0111\u1eb7c t\u00ednh xung, t\u1ea7n s\u1ed1 v\u00e0 nhi\u1ec7t v\u1eabn ph\u1ea3i ph\u00f9 h\u1ee3p. V\u1edbi linh ki\u1ec7n nhi\u1ec1u ch\u00e2n, s\u01a1 \u0111\u1ed3 ch\u00e2n b\u1eaft bu\u1ed9c ph\u1ea3i t\u01b0\u01a1ng th\u00edch.<\/p>\n

                \n

                T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n

                C\u00e1c t\u00e0i li\u1ec7u d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu k\u00fd hi\u1ec7u, nguy\u00ean l\u00fd, th\u00f4ng s\u1ed1 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111o ki\u1ec3m c\u1ee7a linh ki\u1ec7n.<\/p>\n

                  \n
                1. [1] Data Conversion Handbook Elsevier eBook-LinG<\/strong> \u2014 trang 10, trang 901.<\/li>\n
                2. [2] Real Analog Solutions for Digital Designers<\/strong> \u2014 trang 262, trang 263.<\/li>\n
                3. [3] ON_Analog_Integrated_Circuits<\/strong> \u2014 trang 8, trang 501.<\/li>\n
                4. [4] Mixed Signal And DSP Design Techniques<\/strong> \u2014 trang 383.<\/li>\n<\/ol>\n<\/section>\n

                  14. K\u1ebft lu\u1eadn<\/h2>\n

                  Mu\u1ed1n s\u1eed d\u1ee5ng linh ki\u1ec7n n\u00e0y \u0111\u00fang c\u00e1ch, ng\u01b0\u1eddi \u0111\u1ecdc c\u1ea7n nh\u1eadn d\u1ea1ng \u0111\u00fang lo\u1ea1i, hi\u1ec3u k\u00fd hi\u1ec7u v\u00e0 \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i, t\u00ednh \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c, \u0111o ki\u1ec3m an to\u00e0n v\u00e0 \u0111\u1ed1i chi\u1ebfu datasheet tr\u01b0\u1edbc khi thay th\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  T\u00ecm hi\u1ec3u IC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO: k\u00fd hi\u1ec7u, ki\u1ec3u \u0111\u00f3ng g\u00f3i, c\u00f4ng th\u1ee9c, c\u00e1ch m\u1eafc trong m\u1ea1ch, ph\u01b0\u01a1ng ph\u00e1p \u0111o, l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n","protected":false},"author":1,"featured_media":2347,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-2356","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dien-tu"],"yoast_head":"\nIC \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh LDO l\u00e0 g\u00ec? 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