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| TPS62660_15 Datasheet, PDF (3/29 Pages) Texas Instruments – 1000-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING | |||
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TPS62660, TPS62665
www.ti.com
SLVS871C â FEBRUARY 2010 â REVISED JULY 2011
ELECTRICAL CHARACTERISTICS
Minimum and maximum values are at VI = 2.3V to 5.5V, VO = 1.8V, EN = 1.8V, AUTO mode and TA = -40°C to 85°C; Circuit
of Parameter Measurement Information section (unless otherwise noted). Typical values are at VI = 3.6V, VO = 1.8V, EN =
1.8V, AUTO mode and TA = 25°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
SUPPLY CURRENT
VI
IQ
I(SD)
UVLO
Input voltage range
Operating quiescent current
Shutdown current
Undervoltage lockout threshold
IO = 0mA. Device not switching
IO = 0mA, PWM mode
EN = GND
2.3
31
7.6
0.2
2.05
5.5 V
55 μA
mA
2.5 μA
2.1 V
ENABLE, MODE
VIH
High-level input voltage
VIL
Low-level input voltage
Ilkg
Input leakage current
POWER SWITCH
Input connected to GND or VIN
1.0
0.01
V
0.4 V
1 μA
rDS(on)
Ilkg
rDS(on)
Ilkg
rDIS
P-channel MOSFET on
resistance
TPS6266x
P-channel leakage current, PMOS
N-channel MOSFET on
resistance
TPS6266x
N-channel leakage current, NMOS
Discharge resistor for
power-down sequence
TPS62665
VI = V(GS) = 3.6V, PWM mode
VI = V(GS) = 2.5V, PWM mode
V(DS) = 5.5V, -40°C ⤠TJ ⤠85°C
VI = V(GS) = 3.6V, PWM mode
VI = V(GS) = 2.5V, PWM mode
V(DS) = 5.5V, -40°C ⤠TJ ⤠85°C
270
mâ¦
350
mâ¦
1 μA
140
mâ¦
200
mâ¦
2 μA
15
50 â¦
P-MOS current limit
Input current limit under short-circuit
conditions
2.3V ⤠VI ⤠4.8V, Open loop
VO shorted to ground
1400
1500
19
1750 mA
mA
Thermal shutdown
140
°C
Thermal shutdown hysteresis
10
°C
OSCILLATOR
fSW
Oscillator frequency
OUTPUT
TPS6266x IO = 0mA, PWM mode
5.4
6
6.6 MHz
2.3V ⤠VI ⤠2.7V, 0mA ⤠IO ⤠600mA
2.7V ⤠VI ⤠3.0V, 0mA ⤠IO ⤠800mA
3.0V ⤠VI ⤠4.8V, 0mA ⤠IO ⤠1000mA
PFM/PWM operation
0.98ÃVNOM
VNOM 1.03ÃVNOM
V
V(OUT)
Regulated DC output
voltage
TPS6266x
3.0V ⤠VI ⤠5.5V, 0mA ⤠IO ⤠1000mA
PFM/PWM operation
2.3V ⤠VI ⤠2.7V, 0 mA ⤠IO ⤠600mA
2.7V ⤠VI ⤠3.0V, 0 mA ⤠IO ⤠800mA
3.0V ⤠VI ⤠5.5V, 0 mA ⤠IO ⤠1000mA
PWM operation
0.98ÃVNOM
0.98ÃVNOM
VNOM 1.04ÃVNOM
V
VNOM 1.02ÃVNOM
V
Line regulation
Load regulation
Feedback input resistance
VI = VO + 0.5V (min 2.3V) to 5.5V, IO = 200 mA
VI = 3.6V, IO = 0m A to 1000 mA
0.13
â0.00025
480
%/V
%/mA
kâ¦
TPS62660 IO = 1mA
ÎVO
Power-save mode ripple
voltage
IO = 1mA
TPS62661 L = 1μH (muRata LQM2MPN1R0NG0)
CO = 10μF 4V 0402 (muRata GRM155R60G106M)
TPS62665 IO = 1mA
Start-up time
TPS62660 IO = 0mA, Time from active EN to VO
TPS62661 RL = 2â¦, Time from active EN to VO
20
mVPP
9
mVPP
24
mVPP
120
μs
55
μs
Copyright © 2010â2011, Texas Instruments Incorporated
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