Datasheet

TPS62620, TPS62621
TPS62622, TPS62623
TPS62624, TPS62625
www.ti.com SLVS848C –JULY 2009– REVISED AUGUST 2011
ELECTRICAL CHARACTERISTICS
Minimum and maximum values are at V
I
= 2.3V to 5.5V, V
O
= 1.82V, EN = 1.82 V, 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
= 1.82V,
EN = 1.82 V, AUTO mode and T
A
= 25°C.
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
TPS62620 V
I
= V
(GS)
= 3.6V. PWM mode 270 mΩ
TPS62621
V
I
= V
(GS)
= 2.5V. PWM mode 350 mΩ
TPS62622
P-channel MOSFET
r
DS(on)
on resistance
V
I
= V
(GS)
= 3.6V. PWM mode 480 mΩ
TPS62623
TPS62624
V
I
= V
(GS)
= 2.5V. PWM mode 640 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
r
DS(on)
TPS6262x
on 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 1 μA
Discharge resistor for power-down
r
DIS
15 50 Ω
sequence
P-MOS current limit 2.3V ≤ V
I
≤ 4.8V. Open loop 975 1100 1200 mA
Input current 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 TPS6262x I
O
= 0mA. PWM mode 5.4 6 6.6 MHz
OUTPUT
2.3V ≤ V
I
≤ 4.8V, 0mA ≤ I
O
≤ 600mA
0.98×V
NOM
V
NOM
1.03×V
NOM
V
PFM/PWM operation
Regulated DC 2.3V ≤ V
I
≤ 5.5V, 0mA ≤ I
O
≤ 600mA
0.98×V
NOM
V
NOM
1.04×V
NOM
V
output voltage PFM/PWM operation
V
(OUT)
TPS6262x
2.3V ≤ V
I
≤ 5.5V, 0 mA ≤ I
O
≤ 600mA
0.98×V
NOM
V
NOM
1.02×V
NOM
V
PWM operation
Line regulation V
I
= V
O
+ 0.5V (min 2.3V) to 5.5V, I
O
= 200mA 0.13 %/V
Load regulation I
O
= 0mA to 600mA -0.0003 %/mA
Feedback input resistance 480 kΩ
TPS62620
I
O
= 1mA 20 mV
PP
TPS62621
Power-save mode
ΔV
O
ripple voltage
TPS62623
I
O
= 1mA 24 mV
PP
TPS62624
Start-up time TPS62620 I
O
= 0mA, Time from active EN to V
O
120 μs
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