ZHCS992F June   2012  – September 2014

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Handling Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Internal Current Limit (ICL)
      2. 7.3.2 Enable (EN) And Under-Voltage Lockout (UVLO)
      3. 7.3.3 Soft-Start And Inrush Current
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 ANY-OUT Programmable Output Voltage
      2. 7.5.2 Adjustable Operation (TPS7A4701 Only)
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Capacitor Recommendations
          1. 8.2.2.1.1 Input and Output Capacitor Requirements
          2. 8.2.2.1.2 Noise Reduction Capacitor (CNR)
        2. 8.2.2.2 Dropout Voltage (VDO)
        3. 8.2.2.3 Output Voltage Accuracy
        4. 8.2.2.4 Startup
        5. 8.2.2.5 AC Performance
          1. 8.2.2.5.1 Power-Supply Rejection Ratio (PSRR)
          2. 8.2.2.5.2 Load Step Transient Response
          3. 8.2.2.5.3 Noise
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Power Dissipation (PD)
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Protection
    4. 10.4 Estimating Junction Temperature
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档　
    2. 11.2 相关链接
    3. 11.3 商标
    4. 11.4 静电放电警告
    5. 11.5 术语表
  12. 12机械封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

5 Pin Configuration and Functions

RGW Package
5-mm × 5-mm VQFN-20
(Top View)
po_bvs204.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
0P1V 12 I When connected to GND, this pin adds 0.1 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
0P2V 11 I When connected to GND, this pin adds 0.2 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
0P4V 10 I When connected to GND, this pin adds 0.4 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
0P8V 9 I When connected to GND, this pin adds 0.8 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
1P6V 8 I When connected to GND, this pin adds 1.6 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
3P2V 6 I When connected to GND, this pin adds 3.2 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
6P4V1 5 I When connected to GND, this pin adds 6.4 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
6P4V2 4 I When connected to GND, this pin adds 6.4 V to the nominal output voltage of the regulator.
Do not connect any voltage other than GND to this pin. If not used, leave this pin floating.
EN 13 I Enable pin. The device is enabled when the voltage on this pin exceeds the maximum enable voltage, VEN(HI). If enable is not required, tie EN to IN.
GND 7 — Ground
IN 15, 16 I Input supply. A capacitor greater than or equal to 1 µF must be tied from this pin to ground to assure stability.
A 10-µF capacitor is recommended to be connected from IN to GND (as close to the device as possible) to reduce circuit sensitivity to printed circuit board (PCB) layout, especially when long input traces or high source impedances are encountered.
NC 2, 17-19 — This pin can be left open or tied to any voltage between GND and IN.
NR 14 — Noise reduction pin. When a capacitor is connected from this pin to GND, RMS noise can be reduced to very low levels. A capacitor greater than or equal to 10 nF must be tied from this pin to ground to assure stability. A 1-µF capacitor is recommended to be connected from NR to GND (as close to the device as possible) to maximize ac performance and minimize noise.
OUT 1, 20 O Regulator output. A capacitor greater than or equal to 10 µF must be tied from this pin to ground to assure stability. A 47-µF ceramic output capacitor is highly recommended to be connected from OUT to GND (as close to the device as possible) to maximize ac performance.
SENSE/FB 3 I Control-loop error amplifier input (TPS7A4701 only).
This is the SENSE pin if the device output voltage is programmed using ANY-OUT (no external feedback resistors). This pin must be connected to OUT. Connect this pin to the point of load to maximize accuracy.
This is the FB pin if the device output voltage is set using external resistors. See the Adjustable Operation section for more details.
SENSE 3 I Control-loop error amplifier input (TPS7A4700 only).
This is the SENSE pin of the device and must be connected to OUT. Connect this pin to the point of load to maximize accuracy.
Thermal Pad — Connect the thermal pad to a large-area ground plane. The thermal pad is internally connected to GND.
千亿体育app官网登录(中国)官方网站IOS/安卓通用版/手机APP | 米乐app下载官网（中国）|ios|Android/通用版APP最新版 | 米乐|米乐·M6（中国大陆）官方网站 | 千亿体育登陆地址 | 华体会体育（中国）HTH·官方网站 | 千赢qy国际_全站最新版千赢qy国际V6.2.14安卓/IOS下载 | 18新利网v1.2.5|中国官方网站 | bob电竞真人（中国官网）安卓/ios苹果/电脑版【1.97.95版下载】 | 千亿体育app官方下载(中国)官方网站IOS/安卓/手机APP下载安装 |