Datasheet

TPS62732, TPS62733
TPS62730
www.ti.com SLVSAC3C –MAY 2011–REVISED DECEMBER 2012
RECOMMENDED OPERATING CONDITIONS
operating ambient temperature T
A
= –40 to 85°C (unless otherwise noted)
MIN NOM MAX UNIT
Supply voltage V
IN
1.9 3.9 V
Effective inductance 1.5 2.2 3 μH
Effective output capacitance connected to V
OUT
1.0 10 μF
Operating junction temperature range, T
J
–40 125 °C
T
A
Operating free air temperature range -40 85
ELECTRICAL CHARACTERISTICS
V
IN
= 3.0V, V
OUT
= 2.1V, ON/BYP = V
IN
, T
A
= –40°C to 85°C typical values are at T
A
= 25°C (unless otherwise noted), C
IN
=
2.2μF, L = 2.2μH, C
OUT
= 2.2μF, see parameter measurement information
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY
V
IN
Input voltage range 1.9 3.9 V
ON/BYP = high, I
OUT
= 0mA. V
IN
= 3V
25 40
device not switching
I
OUT
= 0mA. device switching, V
IN
= 3.0V,
I
Q
Operating quiescent current μA
34
V
OUT
= 2.1V
ON/BYP = high, Bypass switch active, V
IN
=
23
V
OUT
= 2.1V
I
SD
Shutdown current, Bypass Switch Activated
(1)
ON/BYP = GND, leakage current into V
IN
30 550
nA
ON/BYP = GND, leakage current into V
IN
, 110
T
A
= 60°C
ON/BYP
V
IH TH
Threshold for detecting high ON/BYP 1.9 V ≤ V
IN
≤ 3.9V , rising edge 0.8 1 V
V
IL TH
Threshold for detecting low ON/BYP 1.9 V ≤ V
IN
≤ 3.9V , falling edge 0.4 0.6 V
I
IN
Input bias Current 0 50 nA
POWER SWITCH
High side MOSFET on-resistance 600
R
DS(ON)
V
IN
= 3.0V mΩ
Low Side MOSFET on-resistance 350
Forward current limit MOSFET high-side 410 mA
I
LIMF
V
IN
= 3.0V, open loop
Forward current limit MOSFET low side 410 mA
BYPASS SWITCH
R
DS(ON)
Bypass Switch on-resistance V
IN
= 2.1V, I
OUT
= 20mA, T
J
max = 85°C 2.9 3.8 Ω
V
IN
= 3V 2.1
V
IT BYP
Automatic Bypass Switch Transition ON/BYP = TPS62730 (2.1V) ON / falling V
IN
2.14 2.20 2.3
Threshold (Activation / Deactivation) high
OFF/ rising V
IN
2.19 2.25 2.35
TPS62731 (2.05V) ON / falling V
IN
2.15
OFF / rising V
IN
2.20
TPS62732 (1.9V) ON / falling V
IN
2.05
OFF / rising V
IN
2.10
V
TPS62733 (2.3V) ON / falling V
IN
2.41
OFF/ rising V
IN
2.48
TPS62734 (2.1V) ON / falling V
IN
2.23
OFF / rising V
IN
2.28
TPS62735 (2.3V) ON / falling V
IN
2.23
OFF / rising V
IN
2.33
(1) Shutdown current into VIN pin, includes internal leakage
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