Datasheet

TPS62660, TPS62665
www.ti.com SLVS871C –FEBRUARY 2010– REVISED JULY 2011
ELECTRICAL CHARACTERISTICS
Minimum and maximum values are at V
I
= 2.3V to 5.5V, V
O
= 1.8V, EN = 1.8V, AUTO mode and T
A
= -40°C to 85°C; Circuit
of Parameter Measurement Information section (unless otherwise noted). Typical values are at V
I
= 3.6V, V
O
= 1.8V, EN =
1.8V, AUTO mode and T
A
= 25°C (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
V
I
Input voltage range 2.3 5.5 V
I
O
= 0mA. Device not switching 31 55 μA
I
Q
Operating quiescent current
I
O
= 0mA, PWM mode 7.6 mA
I
(SD)
Shutdown current EN = GND 0.2 2.5 μA
UVLO Undervoltage lockout threshold 2.05 2.1 V
ENABLE, MODE
V
IH
High-level input voltage 1.0 V
V
IL
Low-level input voltage 0.4 V
I
lkg
Input leakage current Input connected to GND or VIN 0.01 1 μA
POWER SWITCH
V
I
= V
(GS)
= 3.6V, PWM mode 270 mΩ
P-channel MOSFET on
r
DS(on)
TPS6266x
resistance
V
I
= V
(GS)
= 2.5V, PWM mode 350 mΩ
I
lkg
P-channel leakage current, PMOS V
(DS)
= 5.5V, -40°C ≤ T
J
≤ 85°C 1 μA
V
I
= V
(GS)
= 3.6V, PWM mode 140 mΩ
N-channel MOSFET on
r
DS(on)
TPS6266x
resistance
V
I
= V
(GS)
= 2.5V, PWM mode 200 mΩ
I
lkg
N-channel leakage current, NMOS V
(DS)
= 5.5V, -40°C ≤ T
J
≤ 85°C 2 μA
Discharge resistor for
r
DIS
TPS62665 15 50 Ω
power-down sequence
P-MOS current limit 2.3V ≤ V
I
≤ 4.8V, Open loop 1400 1500 1750 mA
Input current limit under short-circuit
V
O
shorted to ground 19 mA
conditions
Thermal shutdown 140 °C
Thermal shutdown hysteresis 10 °C
OSCILLATOR
f
SW
Oscillator frequency TPS6266x I
O
= 0mA, PWM mode 5.4 6 6.6 MHz
OUTPUT
2.3V ≤ V
I
≤ 2.7V, 0mA ≤ I
O
≤ 600mA
2.7V ≤ V
I
≤ 3.0V, 0mA ≤ I
O
≤ 800mA
0.98×V
NOM
V
NOM
1.03×V
NOM
V
3.0V ≤ V
I
≤ 4.8V, 0mA ≤ I
O
≤ 1000mA
PFM/PWM operation
Regulated DC output 3.0V ≤ V
I
≤ 5.5V, 0mA ≤ I
O
≤ 1000mA
0.98×V
NOM
V
NOM
1.04×V
NOM
V
voltage PFM/PWM operation
V
(OUT)
TPS6266x
2.3V ≤ V
I
≤ 2.7V, 0 mA ≤ I
O
≤ 600mA
2.7V ≤ V
I
≤ 3.0V, 0 mA ≤ I
O
≤ 800mA
0.98×V
NOM
V
NOM
1.02×V
NOM
V
3.0V ≤ V
I
≤ 5.5V, 0 mA ≤ I
O
≤ 1000mA
PWM operation
Line regulation V
I
= V
O
+ 0.5V (min 2.3V) to 5.5V, I
O
= 200 mA 0.13 %/V
Load regulation V
I
= 3.6V, I
O
= 0m A to 1000 mA –0.00025 %/mA
Feedback input resistance 480 kΩ
TPS62660 I
O
= 1mA 20 mV
PP
I
O
= 1mA
Power-save mode ripple
ΔV
O
TPS62661 L = 1μH (muRata LQM2MPN1R0NG0) 9 mV
PP
voltage
C
O
= 10μF 4V 0402 (muRata GRM155R60G106M)
TPS62665 I
O
= 1mA 24 mV
PP
TPS62660 I
O
= 0mA, Time from active EN to V
O
120 μs
Start-up time
TPS62661 R
L
= 2Ω, Time from active EN to V
O
55 μs
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