Datasheet

TPS65022
www.ti.com SLVS667A –JULY 2006– REVISED SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS
VINDCDC1 = VINDCDC2 = VINDCDC3 = VCC = VINLDO = 3.6 V, VBACKUP = 3 V, T
A
= –40°C to 85°C, typical values are
at T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VDCDC1 STEP-DOWN CONVERTER
V
I
Input voltage range, VINDCDC1 2.5 6 V
I
O
Maximum output current 1200 mA
I
(SD)
Shutdown supply current in VINDCDC1 DCDC1_EN = GND 0.1 1 μA
r
DS(on)
P-channel MOSFET on-resistance VINDCDC1 = V
(GS)
= 3.6 V 125 261 mΩ
I
lkg
P-channel leakage current VINDCDC1 = 6 V 2 μA
r
DS(on)
N-channel MOSFET on-resistance VINDCDC1 = V
(GS)
= 3.6 V 130 260 mΩ
I
lkg
N-channel leakage current V
(DS)
= 6 V 7 10 μA
Forward current limit (P- and N-channel) 2.5 V < V
I(MAIN)
< 6 V 1.55 1.75 1.95 A
f
S
Oscillator frequency 1.3 1.5 1.7 MHz
VINDCDC1 = 3.3 V to 6 V;
3 V –2% 2%
0 mA ≤ I
O
≤ 1.2 A
Fixed output voltage
FPWMDCDC1=0
VINDCDC1 = 3.6 V to 6 V;
3.3 V –2% 2%
0 mA ≤ I
O
≤ 1.2 A
VINDCDC1 = 3.3 V to 6 V;
3 V –1% 1%
0 mA ≤ I
O
≤ 1.2 A
Fixed output voltage
FPWMDCDC1=1
VINDCDC1 = 3.6 V to 6 V;
3.3 V –1% 1%
0 mA ≤ I
O
≤ 1.2 A
Adjustable output voltage with resistor VINDCDC1 = VDCDC1 + 0.3 V (min 2.5 V)
–2% 2%
divider at DEFDCDC1; FPWMDCDC1=0 to 6 V; 0 mA ≤ I
O
≤ 1.2 A
Adjustable output voltage with resistor VINDCDC1 = VDCDC1 + 0.3 V (min 2.5 V)
–1% 1%
divider at DEFDCDC1; FPWMDCDC1=1 to 6 V; 0 mA ≤ I
O
≤ 1.2 A
VINDCDC1 = VDCDC1 + 0.3 V (min. 2.5 V)
Line Regulation 0 %/V
to 6 V; I
O
= 10 mA
Load Regulation I
O
= 10 mA to 1200 mA 0.25 %/A
VDCDC1 ramping from 5% to 95% of target
Soft start ramp time 750 μs
value
Internal resistance from L1 to GND 1 MΩ
VDCDC1 discharge resistance DCDC1 discharge = 1 300 Ω
Copyright © 2006–2011, Texas Instruments Incorporated Submit Documentation Feedback 7
Product Folder Link(s) : TPS65022