LP3925 Datasheet, PDF (27/51 Pages) Texas Instruments – High Performance Power Management Unit for Handset Applications

BUCK ELECTRICAL CHARACTERISTICS
Typical values and limits appearing in normal type apply for T_J = 25°C. Limits appearing in boldface type apply over the entire
junction temperature range for operation, T_J = −25°C to +85°C. Unless otherwise specified, the following applies for V_BATT = 3.6V.
(Note 6)
Symbol
Parameter
Condition
Limits
Typ
Units
Min
Max
V_FB
I_{Q_ECO}
Feedback Voltage
ECO mode I_Q
PWM Mode, No load
V_OUT = 1.1V to 1.8V
PWM Mode, No load
V_OUT = 0.75V to 1.0V
ECO Mode, FB = VIN
No switching, sleep mode
-3
3
%
-10
10
mV
25
µA
R_{DSON (P)}
R_{DSON (N)}
I_LIM
t_STARTUP
F_SW
Pin-Pin Resistance for
PFET
Pin-Pin Resistance for
NFET
Switch Peak Current Limit
StartUp Time from
Shutdown
Switching Frequency
VIN = VGS = 3.6V
I_OUT = 200 mA
VIN = VGS = 3.6V
I_OUT = -200 mA
Open loop; BuckX = 11
I_OUT= 0
V_OUT ≥ 0 - 97% (Note 7)
PWM Mode
160
115
1475
65
4
3.6
250
mΩ
180
mΩ
mA
µs
4.4
MHz
27
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