Datasheet

TPS657051/2EVM Electrical Performance Specifications www.ti.com
1.2 Power Supply Requirements
A dc power supply capable of delivering 5 V at 1 A is required to operate this EVM
1.3 Applications
• USB camera
• Handheld applications
1.4 Features
• Input voltage rating
• 2 × 200-mA Step-down converter for TPS657051/2
• 2.25-MHz switching frequency
• 1 General-purpose 200-mA LDO
2 TPS657051/2EVM Electrical Performance Specifications
Table 1. TPS657051/2EVM Electrical and Performance Specifications
Parameter Notes and Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
V
IN
Input Voltage 3.3 6 V
V
IN1
Input Voltage DCDC1 3.3 6 V
V
IN2
Input Voltage LDO1 3.3 6 V
V
UVLO
UVLO V
AC
rising 3.2 3.3 3.45 V
V
HYS -UVLO
UVLO Hysteresis V
AC
falling 200 300 mV
OUTPUT CHARACTERISTICS
V
DCDC1
Output Voltage DCDC1 V
IN
= Nom, I
OUT
= Nom 3.3 V
V
DCDC2
Output Voltage DCDC2 V
IN
= Nom, I
OUT
= Nom 1.8 V
V
IN
= Nom, TPS657051 3.0
V
LDO1
Output Voltage LDO1 V
I
OUT
= Nom
TPS657052 2.8
–1.5 – 1.5%
Output Voltage Accuracy DCDC1, V
IN
= 3.3 V to 6 V, PFM Mode,
%
DCDC2 Load 0 mA to Iout, max
1 3
Output Voltage Accuracy LDO1 I
OUT
= 100 mA, Vout = 2.8 V –2% +2%
Dropout Voltage at LDO I
O
= 200 mA 200 mV
I
OUT1
Output Current DCDC1 V
IN
= Min to Max 400 mA
I
OUT2
Output Current DCDC2 V
IN
= Min to Max 400 mA
I
OUT1
Output Current LDO1 V
IN
= Min to Max 200 mA
SYSTEMS CHARACTERISTICS
F
SW
Switching Frequency 2030 2250 2480 kHz
hpk Peak Efficiency V
IN
= Nom – 92%
2
TPS657051/2EVM-522 Evaluation Module SLVU366–April 2010
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