Datasheet

TPS62040
TPS62042, TPS62043
TPS62044, TPS62046
SLVS463B − JUNE 2003 − REVISED OCTOBER 2005
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3
ELECTRICAL CHARACTERISTICS
V
I
= 3.6 V, V
O
= 1.8 V, I
O
= 600 mA, EN = VIN, T
A
= −40°C to 85°C
,
typical values are at T
A
= 25°C (unless otherwise noted)
(1)
SUPPLY CURRENT
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
I
Input voltage range 2.5 6.0 V
I
(Q)
Operating quiescent current I
O
= 0 mA, device is not switching 18 35 µA
I
SD
Shutdown supply current EN = GND 0.1 1 µA
V
UVLO
Under−voltage lockout threshold 1.5 2.3 V
ENABLE AND MODE
V
EN
EN high level input voltage 1.4 V
V
EN
EN low level input voltage 0.4 V
I
EN
EN input bias current EN = GND or VIN 0.01 1.0 µA
V
(MODE)
MODE high level input voltage 1.4 V
V
(MODE)
MODE low level input voltage 0.4 V
I
(MODE)
MODE input bias current MODE = GND or VIN 0.01 1.0 µA
POWER SWITCH
r
P-channel MOSFET on−resistance V
I
= V
GS
= 3.6 V 115 210 mΩ
r
DS(ON)
P-channel MOSFET on−resistance V
I
= V
GS
= 2.5 V 145 270 mΩ
I
lkg(P)
P-channel leakage current V
DS
= 6.0 V 1 µA
r
N-channel MOSFET on−resistance V
I
= V
GS
= 3.6 V 85 200 mΩ
r
DS(ON)
N-channel MOSFET on−resistance V
I
= V
GS
= 2.5 V 115 280 mΩ
I
Ikg(N)
N-channel leakage current V
DS
= 6.0 V 1 µA
I
L
P-channel current limit 2.5 V < V
I
< 6.0 V 1.5 1.85 2.2 A
Thermal shutdown 150 °C
OSCILLATOR
f
Oscillator frequency
V
FB
= 0.5 V 1 1.25 1.5 MHz
f
S
Oscillator frequency
V
FB
= 0 V 625 kHz
OUTPUT
V
O
Adjustable output voltage range TPS62040 0.7 V
IN
V
V
ref
Reference voltage 0.5 V
V
FB
Feedback voltage
TPS62040
Adjustable
V
I
= 2.5 V to 6.0 V; I
O
= 0 mA
V
I
= 2.5 V to 6.0 V; 0 mA ≤ I
O
≤ 1.2 A
0%
−3%
3%
3%
TPS62042
1.5V
V
I
= 2.5 V to 6.0 V; I
O
= 0 mA
V
I
= 2.5 V to 6.0 V; 0 mA ≤ I
O
≤ 1.2 A
0%
−3%
3%
3%
V
Fixed output voltage
TPS62043
1.6V
V
I
= 2.5 V to 6.0 V; I
O
= 0 mA
V
I
= 2.5 V to 6.0 V; 0 mA ≤ I
O
≤ 1.2 A
0%
−3%
3%
3%
V
O
Fixed output voltage
TPS62044
1.8V
V
I
= 2.5 V to 6.0 V; I
O
= 0 mA
V
I
= 2.5 V to 6.0 V; 0 mA ≤ I
O
≤ 1.2 A
0%
−3%
3%
3%
TPS62046
3.3V
V
I
= 3.6 V to 6.0 V; I
O
= 0 mA
V
I
= 3.6 V to 6.0 V; 0 mA ≤ I
O
≤ 1.2 A
0%
−3%
3%
3%
Line regulation
(1)
V
I
= V
O
+ 0.5 V (min. 2.5 V) to 6.0 V,
I
O
= 10 mA
0 %/V
Load regulation
(1)
I
O
= 10 mA to 1200 mA 0 %/mA
I
Leakage current into SW pin V
I
>V
O
, 0 V ≤ Vsw ≤ V
I
0.1 1 µA
I
Ikg(SW)
Reverse leakage current into pin SW V
I
= open; EN = GND; V
SW
= 6.0 V 0.1 1 µA
f Short circuit switching frequency V
FB
= 0 V 625 kHz
(1)
The line and load regulations are digitally controlled to assure an output voltage accuracy of ±3%.