Datasheet
TPS61253, TPS61254, TPS61256
TPS61258, TPS61259
www.ti.com
SLVSAG8C –SEPTEMBER 2011–REVISED AUGUST 2012
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
TPS61253 2.65
(1)
4.85
TPS61254 2.5 4.35
TPS61256 2.5 4.85
V
I
Input voltage range V
TPS61257 2.5 4.15
TPS61258 2.65
(1)
4.35
TPS61259 2.65
(1)
4.85
R
L
Minimum resistive load for start-up TPS6125X 55 Ω
L Inductance 0.7 1.0 2.9 µH
C
O
Output capacitance 3.5 5 50 µF
T
A
Ambient temperature –40 85 °C
T
J
Operating junction temperature –40 125 °C
(1) Up to 1000mA peak output current.
THERMAL INFORMATION
TPS6125x
THERMAL METRIC
(1)
YFF UNIT
9 PINS
θ
JA
Junction-to-ambient thermal resistance 110
θ
JCtop
Junction-to-case (top) thermal resistance
θ
JB
Junction-to-board thermal resistance 35
°C/W
ψ
JT
Junction-to-top characterization parameter
ψ
JB
Junction-to-board characterization parameter 50
θ
JCbot
Junction-to-case (bottom) thermal resistance
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
ELECTRICAL CHARACTERISTICS
Minimum and maximum values are at V
IN
= 2.3V to 5.5V, V
OUT
= 4.5V (or V
IN
, whichever is higher), EN = 1.8V, T
A
= –40°C to
85°C; Circuit of Parameter Measurement Information section (unless otherwise noted). Typical values are at V
IN
= 3.6V, V
OUT
= 4.5V, EN = 1.8V, T
A
= 25°C (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
Operating quiescent current
30 45 µA
I
OUT
= 0mA, V
IN
= 3.6V
into V
IN
EN = V
IN
, BP = GND
Operating quiescent current
Device not switching
7 15 µA
into V
OUT
I
Q
TPS6125x
Standby mode quiescent current
11 20 µA
I
OUT
= 0mA, V
IN
= V
OUT
= 3.6V
into V
IN
EN = GND, BP = V
IN
Standby mode quiescent current
Device not switching
9.5 15 µA
into V
OUT
I
SD
Shutdown current TPS6125x EN = GND, BP = GND 0.85 5.0 μA
Falling 2.0 2.1 V
V
UVLO
Under-voltage lockout threshold TPS6125x
Hysteresis 0.1 V
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