ZHCSBT7D May   2013  – April 2017 TPS7A7002

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 ESD 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
      2. 7.3.2 Enable (EN)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Input Capacitor (IN)
      2. 8.1.2 Output Capacitor (OUT)
      3. 8.1.3 Feedback Resistors (FB)
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Consideration
    4. 10.4 Power Dissipation
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 器件命名规则
    2. 11.2 文档支持
      1. 11.2.1 相关文档　
    3. 11.3 接收文档更新通知
    4. 11.4 社区资源
    5. 11.5 商标
    6. 11.6 静电放电警告
    7. 11.7 Glossary
  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

6 Specifications

6.1 Absolute Maximum Ratings

over junction temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Voltage IN –0.3 7 V
EN, FB, OUT –0.3 VIN + 0.3(2)
Current OUT Internally limited A
Temperature Operating virtual junction, TJ –55 150 °C
Storage temperature, Tstg –55 150
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The absolute maximum rating is VIN + 0.3 V or 7 V, whichever is smaller.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±500
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

MIN NOM MAX UNIT
VIN Input voltage 1.425 6.5 V
VEN Enable pin voltage 0 VIN V
CIN Input capacitor 1 10 µF
COUT Output capacitor(1)(2) 4.7 10 200 µF
CFB Feedforward capacitance 0 100 nF
IOUT Output current 0 3 A
TJ Junction temperature –40 125 °C
(1) See Figure 1 and Figure 2 for additional output capacitor ESR requirements.
(2) For output capacitors larger than 47 µF, a feedforward capacitor of at least 220 pF must be used.

6.4 Thermal Information

THERMAL METRIC(1) TPS7A7002 UNIT
DDA (SO PowerPAD)
8 PINS
RθJA Junction-to-ambient thermal resistance 46.4 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 54.2 °C/W
RθJB Junction-to-board thermal resistance 29.9 °C/W
ψJT Junction-to-top characterization parameter 10.2 °C/W
ψJB Junction-to-board characterization parameter 29.8 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 6.8 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.

6.5 Electrical Characteristics

Over the full operating temperature range (see Recommended Operating Conditions), VEN = 1.1 V, VFB = VOUT(1), 1.425 V ≤ VIN ≤ 6.5 V, 10 µA ≤ IOUT ≤ 3 A, COUT = 10 μF (unless otherwise noted). Typical values are at TJ = 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT VOLTAGE
IGND GND pin current VIN = 3.3 V,
50-Ω load resistor between OUT and GND		 3 mA
Shutdown GND pin current VIN = 6.5 V, VEN = 0 V 5 µA
OUTPUT VOLTAGE
VOUT Output voltage accuracy(2)(3) VIN = VOUT + 0.5 V(4), IOUT = 10 mA –2% 2%
VIN = 1.8 V, IOUT = 0.8 A, 0°C ≤ TJ = TA ≤ 85°C –2% 2%
IOUT = 10 mA –3% 3%
ΔVO(ΔVI) Line regulation IOUT = 10 mA 0.2 0.4 %/V
ΔVO(ΔIO) Load regulation(3) 10 mA ≤ IOUT ≤ 3 A 0.25 0.75 %/A
VDO Dropout voltage (5) IOUT = 1 A, 0.5 V ≤ VOUT ≤ 5 V 200 mV
IOUT = 2 A, 0.5 V ≤ VOUT ≤ 5 V 380
IOUT = 3 A, 0.5 V ≤ VOUT ≤ 4.8 V 600
ICL Output current limit VIN = 1.425 V, VOUT = 0.9 × VOUT(NOM) 3.36 A
FEEDBACK
VREF Reference voltage accuracy VIN = 3.3 V, IOUT = 10 mA 0.49 0.5 0.51 V
IFB FB pin current VFB = 0.5 V 1 µA
ENABLE
IEN EN pin current VEN = 0 V, VIN = 3.3 V 0.2 µA
VEN(LO) EN pin input low (disable) VIN = 3.3 V 0 0.5 V
VEN(HI) EN pin input high (enable) VIN = 3.3 V 1.1 VIN V
TEMPERATURE
TSD Thermal shutdown temperature Shutdown, temperature increasing 160 °C
Reset, temperature decreasing 140
(1) When setting VOUT to a value other than 0.5 V, connect R2 to the FB pin using 27-kΩ ≤ R2 ≤ 33-kΩ resistors. See Figure 7 for details of R1 and R2.
(2) Accuracy does not include error on feedback resistors R1 and R2.
(3) TPS7A7002 is not tested at VOUT = 0.5 V, 2.3 V ≤ VIN ≤ 6.5 V, and 500 mA ≤ IOUT ≤ 3 A because the power dissipation is higher than the maximum rating of the package. Also, this accuracy specification does not apply to any application condition that exceeds the power dissipation limit of the package.
(4) VIN = VOUT + 0.5 V or 1.425 V, whichever is greater.
(5) VDO = VIN – VOUT with VFB = GND configuration.

6.6 Typical Characteristics

for all fixed voltage versions and an adjustable version at TJ = 25°C, VEN = VIN, CIN = 10 μF, COUT = 10 μF, and using the component values in Table 2 (unless otherwise noted)
TPS7A7002 g000_bvs134.gif
COUT = 10 µF
Figure 1. Stability Curve
TPS7A7002 g002_bvs134.png
VIN = 5 V, VOUT = 3.3 V
Figure 3. Power-Supply Ripple Rejection vs Frequency
TPS7A7002 g004_bvs134.png
VOUT = 1.6 V
Figure 5. Dropout Voltage vs Output Current
TPS7A7002 g001_bvs134.gif
COUT = 100 µF
Figure 2. Stability Curve
TPS7A7002 g003_bvs134.png
VOUT = 3.3 V
Figure 4. Dropout Voltage vs Output Current
TPS7A7002 g005_bvs134.png
VOUT = 1.4 V
Figure 6. Dropout Voltage vs Output Current