ZHCSF00A April 2016 – May 2016 TPS7B4254-Q1
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3 Feature Description
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
- DDA|8
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
- DDA|8
訂購信息
6 Specifications
6.1 Absolute Maximum Ratings
over operating ambient temperature range (unless otherwise noted)(1)| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Unregulated input voltage | IN(2) | –40 | 45 | V |
| Regulated output voltage | OUT(2)(3) | –1 | 45 | V |
| Voltage difference between the input and output | IN – OUT | –40 | 45 | V |
| Reference voltage | ADJ(2) | –0.3 | 45 | V |
| Feedback input voltage for the tracker | FB(2) | –1 | 45 | V |
| Reference voltage minus the input voltage | ADJ – IN(4) | 18 | V | |
| Operating junction temperature, TJ | –40 | 150 | ºC | |
| Storage temperature, Tstg | –65 | 150 | °C | |
(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) All voltage values are with respect to the GND pin.
(3) An internal diode is connected between the OUT and GND pins with 600-mA dc current capability for inductive clamp protection.
(4) When the (ADJ – IN) voltage is higher than 18 V, the (ADJ – OUT) voltage should be maintained lower than 18 V, otherwise the device can be damaged.
6.2 ESD Ratings
| VALUE | UNIT | ||||
|---|---|---|---|---|---|
| V(ESD) | Electrostatic discharge | Human-body model (HBM), per AEC Q100-002(1) | All pins except NC | ±4000 | V |
| NC pins | ±2000 | ||||
| Charged-device model (CDM), per AEC Q100-011 | ±1000 | ||||
(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.
6.3 Recommended Operating Conditions
over operating ambient temperature range (unless otherwise noted)(1)| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| VIN | Unregulated input voltage(2) | 4 | 40 | V |
| VADJ | Reference input voltage | 1.5 | 18 | V |
| VFB | Feedback input voltage for the tracker | 1.5 | 18 | V |
| VOUT | Regulated output voltage | 1.5 | 40 | V |
| COUT | Output capacitor requirements(3) | 10 | 500 | µF |
| Output ESR requirements(4) | 0.001 | 20 | Ω | |
| TJ | Operating junction temperature | –40 | 150 | ºC |
(1) Within the functional range the device operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the related Electrical Characteristics table.
(2) VIN > VADJ + VDROPOUT
(3) The minimum output capacitance requirement is applicable for a worst-case capacitance tolerance of 30%. When a resistor divider is connected between the OUT and FB pins (the output voltage is higher than reference voltage), a 47-nF feedforward capacitor is required to be connected between the OUT and FB pins for loop stability, and the ESR range of the output capacitor is required to be from 0.001 to 10 Ω.
(4) Relevant ESR value at f = 10 kHz
6.4 Thermal Information
| THERMAL METRIC(1) | TPS7B4254-Q1 | UNIT | |
|---|---|---|---|
| DDA (HSOP) | |||
| 8 PINS | |||
| RθJA | Junction-to-ambient thermal resistance | 45.4 | °C/W |
| RθJC(top) | Junction-to-case (top) thermal resistance | 51.1 | °C/W |
| RθJB | Junction-to-board thermal resistance | 27 | °C/W |
| ψJT | Junction-to-top characterization parameter | 8.2 | °C/W |
| ψJB | Junction-to-board characterization parameter | 26.9 | °C/W |
| RθJC(bot) | Junction-to-case (bottom) thermal resistance | 6.4 | °C/W |
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.
6.5 Electrical Characteristics
VIN = 13.5 V, VADJ ≥ 2 V, TJ = –40ºC to 150ºC, over operating ambient temperature range (unless otherwise noted)| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| VIN(UVLO) | IN undervoltage detection | VIN rising | 3.65 | V | ||
| VIN falling | 2.8 | V | ||||
| ΔVOUT | Output voltage tracking accuracy(1) | IOUT = 100 μA to 150 mA, VIN = 4 to 40 V VADJ < VIN – 1 V 2 V < VADJ < 18 V |
–4 | 4 | mV | |
| ΔVOUT(ΔIO) | Load regulation, steady-state | IOUT = 0.1 to 150 mA, VADJ= 5 V | 4 | mV | ||
| ΔVOUT(ΔVI) | Line regulation, steady-state | IOUT = 10 mA, VIN = 6 to 40 V, VADJ = 5 V | 4 | mV | ||
| PSRR | Power-supply ripple rejection | frip = 100 Hz, Vrip = 0.5 VPP, COUT = 10 μF, IOUT = 100 mA | 70 | dB | ||
| VDROPOUT | Dropout voltage (VDROPOUT = VIN – VOUT) | IOUT = 100 mA, VIN = VADJ ≥ 4 V(2) | 160 | 260 | mV | |
| IOUT(LIM) | Output current limitation | VADJ = 5 V, OUT short to GND | 151 | 450 | 520 | mA |
| IR(IN) | Reverse current at IN | VIN = 0 V, VOUT = 40 V, VADJ = 5 V | –2 | 0 | µA | |
| IR(–IN) | Reverse current at negative IN | VIN = –40 V, VOUT = 0 V, VADJ = 5 V | –10 | µA | ||
| TSD | Thermal shutdown temperature | 175 | ºC | |||
| TSD_hys | Thermal shutdown hysteresis | 15 | ºC | |||
| IQ | Current consumption | 4 V ≤ VIN ≤ 40 V, VADJ = 0 V | 2 | 4 | µA | |
| 4 V ≤ VIN ≤ 40 V, VADJ = 5 V, IOUT < 100 µA | 60 | 100 | µA | |||
| 4 V ≤ VIN ≤ 40 V, VADJ = 5 V, IOUT < 150 mA | 210 | 260 | µA | |||
| IQ(DROPOUT) | Current consumption in dropout region | VIN = VADJ = 5 V, IOUT = 100 μA | 70 | 140 | µA | |
| IADJ | Reference input current | VADJ = VFB = 5 V | 5.5 | µA | ||
| VADJ(LOW) | Reference low signal valid | VOUT = 0 V | 0 | 0.7 | V | |
| VADJ(HIGH) | Reference high signal valid | |VOUT – VADJ| < 4 mV | 2 | 18 | V | |
| IFB | FB bias current | VADJ = VFB = 5 V | 0.5 | µA | ||
(1) The tracking accuracy is specified when the FB pin is directly connected to the OUT pin which means VADJ = VOUT, external resistor divider variance is not included.
(2) Measured when the output voltage, VOUT, has dropped 10 mV from the nominal value.
6.6 Typical Characteristics
| V |
| V |
| VIN = VADJ = 4 V | IOUT = 100 mA |
| V |
| V |
| COUT = 10 µF | IOUT = 1 mA | TA = 25°C |
| VIN = 14 V | VADJ = 5 V |
| VFB = VOUT |
| V | ||
| V |
| VIN = 40 to 6 V | VADJ = 5 V | COUT = 10 µF |
| IOUT = 10 mA | 40 µs/div |
| VIN = 40 to 6 V | VADJ = 5 V | COUT = 10 µF |
| IOUT = 100 mA | 40 µs/div |
| VIN = 14 V | VADJ = 5 V | COUT = 10 µF | ||
| IOUT = 100 mA to 10 mA | 100 µs/div | |||
| V |
| VIN = VADJ = 4 V |
| V |
| V |
| VADJ = 5 V |
| COUT = 10 µF | IOUT = 100 mA | TA = 25°C |
| VIN = 14 V | VADJ = 5 V |
| VFB < VOUT |
| VIN = 6 to 40 V | VADJ = 5 V | COUT = 10 µF |
| IOUT = 10 mA | 40 µs/div |
| VIN = 6 to 40 V | VADJ = 5 V | COUT = 10 µF |
| IOUT = 100 mA | 40 µs/div |
| VIN = 14 V | VADJ = 5 V | COUT = 10 µF |
| IOUT = 10 mA to 100 mA | 100 µs/div | |