Datasheet

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ELECTRICAL CHARACTERISTICS
TPS62020
TPS62021
TPS62026
SLVS076C – JUNE 2003 – REVISED DECEMBER 2004
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)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
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
P-channel MOSFET on-resistance V
I
= V
GS
= 3.6 V 115 210 m Ω
r
DS(ON)
P-channel MOSFET on-resistance V
I
= V
GS
= 2.5 V 145 270 m Ω
I
lkg(P)
P-channel leakage current V
DS
= 6.0 V 1 µA
N-channel MOSFET on-resistance V
I
= V
GS
= 3.6 V 85 200 m Ω
r
DS(ON)
N-channel MOSFET on-resistance V
I
= V
GS
= 2.5 V 115 280 m Ω
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 0.9 1.1 1.3 A
Thermal shutdown 150 ° C
OSCILLATOR
V
FB
= 0.5 V 1 1.25 1.5 MHz
f
S
Oscillator frequency
V
FB
= 0 V 625 kHz
OUTPUT
Adjustable output TPS62020,
V
O
0.7 V
IN
V
voltage range TPS62021
V
ref
Reference voltage 0.5 V
TPS62020, V
I
= 2.5 V to 6.0 V; I
O
= 0 mA 0% 3%
V
FB
Feedback voltage TPS62021 V
V
I
= 2.5 V to 6.0 V; 0 mA ≤ I
O
≤ 600 mA –3% 3%
Adjustable
V
I
= 3.6 V to 6.0 V; I
O
= 0 mA 0% 3%
V
O
Fixed output voltage TPS62026 3.3 V V
V
I
= 3.6 V to 6.0 V; 0 mA ≤ I
O
≤ 600 mA –3% 3%
V
I
= V
O
+ 0.5 V (min 2.5 V) to 6.0 V, I
O
= 10
Line regulation
(1)
0 %/V
mA
Load regulation
(1)
I
O
= 10 mA to 600 mA 0 %/mA
Leakage current into SW pin V
I
> V
O
, 0 V ≤ V
SW
≤ 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%.
3