Datasheet

ABSOLUTE MAXIMUM RATINGS
(1)
ELECTRICAL CHARACTERISTICS
REG71055-Q1
www.ti.com ....................................................................................................................................................................................................... SBAS477 – JULY 2009
V
IN
Supply voltage 3 V to 6 V
V
EN
Enable input voltage – 0.3 V to V
IN
t
SC
Output short-circuit duration Indefinite
T
STG
Storage temperature range – 65 ° C to 150 ° C
T
LEAD
Lead temperature (soldering, 10 seconds) 260 ° C
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
Boldface limits apply over the specified temperature range, T
A
= – 40 ° C to 85 ° C
T
A
= 25 ° C, V
IN
= V
OUT
/2 + 0.75 V, I
OUT
= 10 mA, C
IN
= C
OUT
= 2.2 µ F, C
PUMP
= 0.22 µ F, and V
ENABLE
= 1.3 V (unless otherwise
noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
See conditions under Output Voltage with a
Input voltage, tested startup resistive load no lower than typical 3.0 5.5 V
V
OUT
/I
OUT
I
OUT
≤ 10 mA, 3.0 V ≤ V
IN
≤ 5.5 V 5.2 5.5 5.8 V
Output voltage
I
OUT
≤ 30 mA, 3.25 V ≤ V
IN
≤ 5.5 V 5.2 5.5 5.8 V
Nominal output current 30 mA
Short-circuit output current
(1)
100 mA
Oscillator frequency
(2)
1.0 MHz
Efficiency
(3)
I
OUT
= 10 mA, V
IN
= 3.0 V 90 %
Ripple voltage
(4)
I
OUT
= 30 mA 35 mV
PP
Logic high input voltage, Enable V
IN
= 3.0V to 5.5 V 1.3 V
IN
V
Logic low input voltage, Enable V
IN
= 3.0V to 5.5 V – 0.2 0.4 V
Logic high input current, Enable V
IN
= 3.0V to 5.5 V 100 nA
Logic low input current, Enable V
IN
= 3.0V to 5.5 V 100 nA
Thermal shutdown temperature 160 ° C
Thermal shutdown recovery 140 ° C
Quiescent current
(5)
I
OUT
= 0 mA, V
IN
= 5.5 V 65 100 µ A
Quiescent current in shutdown mode V
IN
= 3.0 V to 5.5 V, Enable = 0 V 0.01 1 µ A
Specified ambient temperature T
A
– 40 85 ° C
Thermal resistance θ
JA
TSOT23-6 220 ° C/W
(1) The supply current is twice the output short-circuit current.
(2) The converter regulates by enabling and disabling periods of switching cycles. The switching frequency is the oscillator frequency during
an active period.
(3) See efficiency curves for other V
IN
/V
OUT
configurations.
(4) Effective series resistance (ESR) of capacitors is < 0.1 Ω .
(5) Measured when the device is not switching.
Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): REG71055-Q1