TPS7B4253-Q1 Automotive 300mA 40V Voltage-Tracking LDO With 4mV Tracking Tolerance | TI.com

TPS7B4253-Q1 (ACTIVE)

Automotive 300mA 40V Voltage-Tracking LDO With 4mV Tracking Tolerance

Automotive 300mA 40V Voltage-Tracking LDO With 4mV Tracking Tolerance - TPS7B4253-Q1
 

Description

For automotive off-board sensors and small current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require consistent power supply as onboard components to secure high accuracy of data acquisition.

The TPS7B4253-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to the off-board modules, the device offers a 4-mV ultralow tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under reverse polarity condition. The TPS7B4253-Q1 device also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 3A
    • Device CDM ESD Classification Level C6
  • –40 to 45-V Wide Input-Voltage Range (Maximum)
  • Output Voltage Adjusts Down to:
    • 1.5 to 40 V (HTSSOP)
    • 2 to 40 V (SO PowerPAD™)
  • 300-mA Output Current Capability
  • Very-Low Output Tracking Tolerance, ±4 mV
  • 320-mV Low Dropout Voltage when IOUT = 200 mA
  • Separate Pins for Enable and Tracking Inputs (HTSSOP only)
  • Low Quiescent Current (IQ):
    • < 4 µA when EN = LOW
    • 60 µA (Typical) at Light Loads
  • Extremely Wide ESR Range.
    • Stable With 10- to 500-µF Ceramic Output Capacitor, ESR 1 mΩ to 20 Ω
  • Reverse Polarity Protection
  • Current-Limit and Thermal-Shutdown Protection
  • Output Short-Circuit Proof to Ground and Supply
  • Inductive Clamp at OUT Pin
  • Available in the Following Packages:
    • 8-Pin SO PowerPAD Package
    • 20-Pin HTSSOP Package

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Parametrics Compare all products in Linear regulators (LDO)

 
Output Options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Package Group
Features
Regulated Outputs (#)
Operating Temperature Range (C)
Thermal Resistance θJA (°C/W)
Approx. Price (US$)
Rating
Output Capacitor Type
PSRR @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
TPS7B4253-Q1 TPS7B4250-Q1 TPS7B4254-Q1 TPS7B7701-Q1
Adjustable Output
Tracking Output    
Adjustable Output
Tracking Output    
Adjustable Output
Tracking Output    
Adjustable Output    
0.3     0.05     0.15     0.3    
40     40     40     40    
4     4     4     4    
40     18     40     20    
1.5     1.5     2     1.5    
HTSSOP | 20
SO PowerPAD | 8    
SOT-23 | 5     SO PowerPAD | 8     HTSSOP | 16    
Enable
Reverse Current Protection
Reverse Voltage Protection    
Reverse Current Protection
Reverse Voltage Protection    
Reverse Current Protection
Reverse Voltage Protection    
Adjustable Current Limit
Current Sense
Enable
Power Good
Reverse Current Protection
Reverse Voltage Protection    
1     1     1     1    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
45     172     45     40    
0.85 | 1ku     0.40 | 1ku     0.70 | 1ku     1.00 | 1ku    
Automotive     Automotive     Automotive     Automotive    
Ceramic
Non-Ceramic    
Ceramic     Ceramic
Non-Ceramic    
Ceramic
Non-Ceramic    
60     60     43     60    
      2    
350     250     160     350    
0.04     0.04     0.06     0.6    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)