Datasheet

TPS61220, TPS61221, TPS61222
SLVS776A –JANUARY 2009–REVISED APRIL 2014 www.ti.com
7.3 Recommended Operating Conditions
MIN NOM MAX UNIT
V
IN
Supply voltage at VIN 0.7 5.5 V
T
J
Operating virtual junction temperature –40 125 °C
7.4 Thermal Information
TPS6122x
THERMAL METRIC
(1)
DCK UNIT
6 PINS
R
θJA
Junction-to-ambient thermal resistance 231.2
R
θJCtop
Junction-to-case (top) thermal resistance 61.8
R
θJB
Junction-to-board thermal resistance 78.8
°C/W
ψ
JT
Junction-to-top characterization parameter 2.2
ψ
JB
Junction-to-board characterization parameter 78.0
R
θJCbot
Junction-to-case (bottom) thermal resistance n/a
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
7.5 Electrical Characteristics
over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature
range of 25°C) (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DC/DC STAGE
V
IN
Input voltage 0.7 5.5 V
V
IN
Minimum input voltage at startup R
Load
≥ 150 Ω 0.7 V
V
OUT
TPS61220 output voltage V
IN
< V
OUT
1.8 6.0 V
V
FB
TPS61220 feedback voltage 483 500 513 mV
V
OUT
TPS61221 output voltage (3.3 V) V
IN
< V
OUT
3.20 3.30 3.41 V
V
OUT
TPS61222 output voltage (5 V) V
IN
< V
OUT
4.82 5.00 5.13 V
I
LH
Inductor current ripple 200 mA
V
OUT
= 3.3 V, V
IN
= 1.2 V, T
A
= 25°C 240 400 mA
I
SW
switch current limit
V
OUT
= 3.3 V 200 400 mA
V
OUT
= 3.3 V 1000 mΩ
R
DSon_HSD
Rectifying switch on resistance
V
OUT
= 5.0 V 700 mΩ
V
OUT
= 3.3 V 600 mΩ
R
DSon_LSD
Main switch on resistance
V
OUT
= 5.0 V 550 mΩ
Line regulation V
IN
< V
OUT
0.5%
Load regulation V
IN
< V
OUT
0.5%
V
IN
0.5 0.9 μA
I
Q
Quiescent current I
O
= 0 mA, V
EN
= V
IN
= 1.2 V, V
OUT
= 3.3 V
V
OUT
5 7.5 μA
I
SD
Shutdown current V
IN
V
EN
= 0 V, V
IN
= 1.2 V, V
OUT
≥ V
IN
0.2 0.5 μA
I
LKG_VOUT
Leakage current into VOUT V
EN
= 0 V, V
IN
= 1.2 V, V
OUT
= 3.3 V 1 μA
I
LKG_L
Leakage current into L V
EN
= 0 V, V
IN
= 1.2 V, V
L
= 1.2 V, V
OUT
≥ V
IN
0.01 0.2 μA
I
FB
TPS61220 Feedback input current V
FB
= 0.5 V 0.01 μA
I
EN
EN input current Clamped on GND or V
IN
(V
IN
< 1.5 V) 0.005 0.1 μA
CONTROL STAGE
V
IL
EN input low voltage V
IN
≤ 1.5 V 0.2 × V
IN
V
V
IH
EN input high voltage V
IN
≤ 1.5 V 0.8 × V
IN
V
V
IL
EN input low voltage 5 V > V
IN
> 1.5 V 0.4 V
V
IH
EN input high voltage 5 V > V
IN
> 1.5 V 1.2 V
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