ZHCSHZ6A April   2018  – December 2018 TPS746

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      典型应用
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Timing Requirements
    7. 6.7 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 Undervoltage Lockout (UVLO)
      2. 7.3.2 Shutdown
      3. 7.3.3 Foldback Current Limit
      4. 7.3.4 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Functional Mode Comparison
      2. 7.4.2 Normal Operation
      3. 7.4.3 Dropout Operation
      4. 7.4.4 Disabled
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adjustable Device Feedback Resistors
      2. 8.1.2 Input and Output Capacitor Selection
      3. 8.1.3 Dropout Voltage
      4. 8.1.4 Exiting Dropout
      5. 8.1.5 Reverse Current
      6. 8.1.6 Power Dissipation (PD)
      7. 8.1.7 Power-Good Function
    2. 8.2 Feed-Forward Capacitor (CFF)
    3. 8.3 Typical Application
      1. 8.3.1 Design Requirements
      2. 8.3.2 Detailed Design Procedure
        1. 8.3.2.1 Input Current
        2. 8.3.2.2 Thermal Dissipation
      3. 8.3.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  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 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 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

6.5 Electrical Characteristics

at operating temperature range (TJ = –40°C to 125°C), VIN = VOUT(NOM) + 0.5 V or 1.5 V (whichever is greater), IOUT = 1 mA, VEN = VIN, and CIN = COUT = 1 μF, unless otherwise noted. All typical values at TJ = 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VFB Feedback voltage TJ = 25°C 0.55 V
Output accuracy(1)  TJ = 25°C –0.7% 0.7%
–40°C ≤ TJ ≤ +85°C –1% 1%
–40°C ≤ TJ ≤ +125°C –1.5% 1.5%
Line regulation VOUT(NOM) + 0.5 V(2) ≤ VIN ≤ 6.0 V 2 7.5 mV
Load regulation 0.1 mA ≤ IOUT ≤ 1 A, VIN ≥ 2.0 V  0.03 V/A
IGND Ground current IOUT = 0 mA TJ = 25°C 10 25 31 µA
–40°C ≤ TJ ≤ +125°C 35
ISHDN Shutdown current VEN ≤ 0.3 V, 1.5 V ≤ VIN ≤ 6.0 V 0.1 1 µA
IFB Feedback pin current 0.01 0.1 µA
ICL Output current limit VIN = VOUT(NOM) + 1.0 V VOUT = VOUT(NOM) -
0.2 V, VOUT < 1.5 V		 1.22 1.44 1.83 A
VOUT = 0.9 x VOUT(NOM), 
VOUT ≥ 1.5 V		 1.22 1.44 1.83
ISC Short-circuit current limit VIN = VOUT(NOM) + 1.0 V VOUT = 0 V 770 mA
VDO Dropout voltage IOUT = 1 A,
–40°C ≤ TJ ≤ +125°C,
VOUT = 0.95 × VOUT(NOM) 		0.65 V ≤ VOUT < 0.8 V 896 1050 mV
0.8 V ≤ VOUT < 0.9 V 765 920
0.9 V ≤ VOUT < 1.0 V 700 850
1.0 V ≤ VOUT < 1.2 V 600 750
1.2 V ≤ VOUT < 1.5 V 464 585
1.5 V ≤ VOUT < 1.8 V 332 440
1.8 V ≤ VOUT < 2.5 V 264 360
2.5 V ≤ VOUT < 3.3 V 193 270
3.3 V ≤ VOUT ≤ 5.5 V 161 225
PSRR Power-supply rejection ratio VIN = VOUT(NOM) + 1 V,
IOUT = 50 mA		 f = 1 kHz 50 dB
f = 100 kHz 45
f = 1 MHz 30
Vn Output noise voltage BW = 10 Hz to 100 kHz, VOUT = 0.9 V 53 µVRMS
VUVLO Undervoltage lockout VIN rising 1.21 1.33 1.47 V
VIN falling 1.17 1.29 1.42
VUVLO, HYST Undervoltage lockout hysteresis VIN hysteresis 40 mV
tSTR Startup time From EN low-to-high transition to VOUT = VOUT(NOM) x 95%  500 µs
VEN(HI) EN pin high voltage 1.0 V
VEN(LO) EN pin low voltage 0.3 V
IEN Enable pin current VIN = VEN = 6.0 V 10 nA
RPULLDOWN Pulldown resistance VIN = 6.0 V 95 Ω
PGHTH PG high threshold VOUT increasing 89 94 95 %VOUT
PGLTH PG low threshold VOUT decreasing 87 92 93 %VOUT
VOL(PG) PG pin low-level output voltage VIN ≥ 1.5 V, ISINK = 1 mA 300 mV
VIN ≥ 2.75 V, ISINK = 2 mA 300 mV
Ilkg(PG) PG pin leakage current VOUT > PGHTH, VPG = 6.0 V 300 nA
TSD Thermal shutdown Shutdown, temperature increasing 170 °C
Reset, temperature decreasing 155
(1) When the device is connected to external feedback resistors at the FB pin, external resistor tolerances are not included
(2) VIN = 1.5V for VOUT < 1.0 V
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