Datasheet

TPS62260-Q1, TPS62261-Q1
TPS62262-Q1, TPS62263-Q1
www.ti.com SLVSA16C –AUGUST 2009–REVISED JULY 2012
ELECTRICAL CHARACTERISTICS
Over full operating ambient temperature range, typical values are at T
A
= 25°C. Unless otherwise noted, specifications apply
for condition V
IN
= EN = 3.6V. External components C
IN
= 4.7μF 0603, C
OUT
= 10μF 0603, L = 2.2μH, see the parameter
measurement information.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Supply
V
IN
Input voltage range 2.3 6 V
V
IN
2.5 V to 6 V 600
I
OUT
Output current
(1)
V
IN
2.3 V to 2.5 V 300 mA
V
IN
2 V to 2.3 V 150
I
OUT
= 0 mA, PFM mode enabled (MODE = GND),
15
device not switching
μA
I
OUT
= 0 mA, PFM mode
(2)
enabled (MODE = GND),
I
Q
Operating quiescent current 18.5
device switching, V
OUT
= 1.8 V
I
OUT
= 0 mA, switching with no load (MODE = V
IN
),
3.8 mA
PWM operation, V
OUT
= 1.8 V, V
IN
= 3 V
T
A
= 25°C 0.1 1
I
SD
Shutdown current EN = GND μA
T
A
= 105°C 2.5
Falling 1.85
UVLO Undervoltage lockout threshold V
Rising 1.95
Enable, Mode
V
IH
High level input voltage, EN, MODE 2 V ≤ V
IN
≤ 6 V 1 VIN V
V
IL
Low level input voltage, EN, MODE 2 V ≤ V
IN
≤ 6 V 0 0.4 V
I
IN
Input bias current, EN, MODE EN, MODE = GND or VIN 0.01 1 μA
Power Switch
High-side MOSFET on-resistance 240 480
R
DS(on)
V
IN
= V
GS
= 3.6 V, T
A
= 25°C mΩ
Low-side MOSFET on-resistance 185 380
Forward current limit MOSFET, high
I
LIMF
V
IN
= V
GS
= 3.6 V, T
A
= 25°C 0.8 1 1.3 A
side and low side
Thermal shutdown Increasing junction temperature 140
T
SD
°C
Thermal shutdown hysteresis Decreasing junction temperature 20
Oscillator
f
SW
Oscillator frequency 2 V ≤ V
IN
≤ 6 V 2 2.25 2.5 MHz
Output
V
OUT
Adjustable output voltage range 0.6 V
IN
V
V
ref
Reference voltage 600 mV
MODE = V
IN
, PWM operation,
Feedback voltage PWM mode for fixed output voltage versions V
FB
= V
OUT
, –1.5% 0% 1.5%
2.5 V ≤ V
IN
≤ 6 V, 0 mA ≤ I
OUT
≤ 600 mA
(3)
V
FB
MODE = GND, device in PFM mode,
Feedback voltage PFM mode 1%
voltage positioning active
(2)
Load regulation PWM Mode -0.5 %/A
t
Start Up
Start-up time Time from active EN to reach 95% of V
OUT
nominal 500 μs
t
Ramp
V
OUT
ramp-up time Time to ramp from 5% to 95% of V
OUT
250 μs
I
lkg
Leakage current into SW pin V
IN
= 3.6 V, V
IN
= V
OUT
= V
SW
, EN = GND
(4)
0.1 1 μA
(1) Not production tested
(2) In PFM mode, the internal reference voltage is set to typ. 1.01×V
ref
. See the parameter measurement information.
(3) For V
IN
= V
O
+ 0.6 V
(4) In fixed output voltage versions, the internal resistor divider network is disconnected from FB pin.
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