Datasheet

TPS65023, TPS65023B
www.ti.com SLVS670J –JUNE 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 1700 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-channel and
2.5 V < V
I(MAIN)
< 6 V 1.94 2.19 2.44 A
N-channel)
f
S
Oscillator frequency 1.95 2.25 2.55 MHz
Fixed output voltage VINDCDC1 = 2.5 V to 6 V;
–2 2
FPWMDCDC1=0 0 mA ≤ I
O
≤ 1.7 A
All VDCDC1 %
Fixed output voltage VINDCDC1 = 2.5 V to 6 V;
–1 1
FPWMDCDC1=1 0 mA ≤ I
O
≤ 1.7 A
Adjustable output voltage with resistor divider VINDCDC1 = VDCDC1 + 0.5 V (min 2.5 V)
–2 2 %
at DEFDCDC1; FPWMDCDC1=0 to 6 V; 0 mA ≤ I
O
≤ 1.7 A
Adjustable output voltage with resistor divider VINDCDC1 = VDCDC1 + 0.5 V (min 2.5 V)
–1 1 %
at DEFDCDC1; FPWMDCDC1=1 to 6 V; 0 mA ≤ I
O
≤ 1.7 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 1700 mA 0.25 %/A
t
Start
Start-up time Time from active EN to start switching 145 175 200 μs
t
Ramp
V
OUT
ramp-up time Time to ramp from 5% to 95% of V
OUT
400 750 1000 μs
Internal resistance from L1 to GND 1 MΩ
VDCDC1 discharge resistance DCDC1 discharge = 1 300 Ω
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