Datasheet

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ELECTRICAL CHARACTERISTICS
TPS61120
TPS61122, TPS61121
SLVS427C – JUNE 2002 – REVISED APRIL 2004
over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature
range of 25°C) (unless otherwise noted)
DC/DC STAGE
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
I
Input voltage range 1.8 5.5 V
Adjustable output voltage range
V
O
2.5 5.5 V
(TPS61120)
Reference
V
ref
485 500 515 mV
voltage
Oscillator
f 400 500 600 kHz
frequency
I
SW
Switch current limit VOUT= 3.3 V 1100 1300 1600 mA
Startup current
0.4 x I
SW
mA
limit
SWN switch on resistance VOUT= 3.3 V 200 350 mΩ
SWP switch on resistance VOUT= 3.3 V 250 500 mΩ
Total accuracy (including line and
-3% ±3%
load regulation)
I
O
= 0 mA, V
EN
= VBAT = 1.8 V,
into VBAT 10 25 µA
DC/DC
VOUT = 3.3 V, ENLDO = 0
quiescent
I
O
= 0 mA, V
EN
= VBAT = 1.8 V,
current
into VOUT 10 25 µA
VOUT = 3.3 V, ENLDO = 0
DC/DC shutdown current V
EN
= 0 V 0.2 1 µA
LDO STAGE
V
I(LDO)
Input voltage range 1.8 7 V
Adjustable output voltage range
V
O(LDO)
0.9 5.5 V
(TPS61120)
I
O(max)
Output current 200 320 mA
LDO short circuit current limit 500 mA
Minimum voltage drop I
O
= 200 mA 300 mV
Total accuracy (including line and
I
O
≥ 1 mA ±3%
load regulation)
LDOIN change from 1.8 V to 2.6 V
Line regulation 0.6%
at 100 mA, LDOOUT = 1.5 V
Load change from 10% to 90%,
Load regulation 0.6%
LDOIN = 3.3 V
LDOIN = 7 V, VBAT = 1.8 V, EN =
LDO quiescent current 20 30 µA
VBAT
LDO shutdown current LDOEN = 0 V, LDOIN = 7 V 0.1 1 µA
CONTROL STAGE
V
IL
LBI voltage threshold V
LBI
voltage decreasing 490 500 510 mV
LBI input hysteresis 10 mV
LBI input current EN = VBAT or GND 0.01 0.1 µA
LBO output low voltage V
O
= 3.3 V, I
OI
= 100 µA 0.04 0.4 V
LBO output low current 100 µA
LBO output leakage current V
LBO
= 7 V 0.01 0.1 µA
V
IL
EN, SKIPEN input low voltage 0.2 × VBAT V
V
IH
EN, SKIPEN input high voltage 0.8 × V
VBAT
V
IL
LDOEN input low voltage 0.2 × V
LDOIN
V
0.8 ×
V
IH
LDOEN input high voltage V
V
LDOIN
EN, SKIPEN input current Clamped on GND or VBAT 0.01 0.1 µA
3