Datasheet

www.ti.com

Electrical Performance Specifications

2 Electrical Performance Specifications

Table 1. TPS51225EVM-133 Electrical Performance Specifications

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

INPUT CHARACTERISTICS

Voltage range Vin 8 12 20 V

Maximum input current Vin = 8 V, 5 Vout, 1/10A, 3.3 Vout, 2/10A 7.3 A

No load input current Vin = 20 V, 5 Vout, 1/0A, 3.3 Vout, 2/0A with auto-skip mode 1.5 mA

OUTPUT CHARACTERISTICS

Output voltage V

OUT

1 5 V

Line regulation(Vin = 8–20 V) 0.1%

Output voltage

Load regulation(Vin = 12 V, Vout1/0A–10A with auto-skip mode),

regulation

0.5%

Voutput2: off

Output voltage ripple Vin = 12 V, Vout1/ 10A , Voutput2: off 32 mVpp

Output load current Vin = 8–20V 0 8 10 A

Output over current Vin = 12 V 12.9 A

Switching Frequency Vin = 12 V, Voutput1/10A 300 kHz

Efficiency Vin = 12 V, Vout1/ 10A, Vout2: off 95.69%

Output voltage Vout2 3.3 V

Line regulation(Vin = 8–20V) 0.1%

Output voltage

Load regulation(Vin = 12 V, Vout 2/0A–10A with auto-skip mode),

regulation

0.5%

Voutput1: off

Output voltage ripple Vin = 12 V, Vout2/ 10A , Voutput1: off 30 mVpp

Output load current Vin = 8–20 V 0 8 10 A

Output over current Vin = 12 V 12.9 A

Switching Frequency Vin = 12 V, Voutput2/10A 355 kHz

Efficiency Vin = 12 V, Vout2 at 10 A, Vout1: off 94.33%

Operating temperature 25 ºC

SLVU735–June 2012 Dual Synchronous Step-Down Fixed Output Controller with 5-V and 3.3-V

LDOs

Submit Documentation Feedback