LP3941 Datasheet, PDF (7/34 Pages) Texas Instruments – Cellular Phone Power Management Unit

Symbol
Parameter
Condition
Min
V_IH
Input High Level
PS-HOLD, ON, BSNS, HF-PWR,
RTC_ALARM, SDA, SCL, V_O5-EN, V_O6-
EN.
2.0
2.5V ≤ V_BATT ≤ 5.5V
I_IL
Logic Input Current
SDA, SCL
0V ≤ V_IN ≤ 5.5V
−5
PS-HOLD Input Current
0V ≤ V_IN ≤ V_BATT
−5
R_IN
ON, HF_PWR Pull-Down
Resistance to GND
V_O5-EN, V_O6-EN, RTC_ALARM
Pull Down Resistance to GND
LOGIC AND CONTROL OUTPUTS
V_OL
I_LEAKAGE
I_O-MAX
ON Output Low Level
I_SINK = 1 mA
ON Open Drain Leakage
V_ON = 4.2V
ON, RESET, OUT (COMP1), OUT
(COMP2) Output Maximum Sink/
Source Current
Typ
200
1700
Max
Units
V
+5
µA
+5
µA
kΩ
kΩ
0.4
V
5
µA
5
mA
V_O1 LDO Electrical Characteristics
Unless otherwise noted, V_IN = V_BATT = 3.6V. 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, −40 to +85°C. (Note 2, Note 8, Note 9)
Symbol
Parameter
Condition
Min
Typ
Max
Units
V_OUT
Output Voltage
Accuracy
1 mA ≤ I_OUT ≤ 200 mA, V_OUT = 2.2V
−3
±1.0
+3
%
3.0V ≤ V_BATT = V_IN ≤ 5.5V
V_OUT
Range
Programmable Output Voltage
Range
0 µA ≤ I_OUT ≤ 200 mA
Programming Resolution = 100 mV
1.5
1.8
3.0
V
I_OUT
Output Current
V_IN–V_OUT
ΔV_OUT
Output Current Limit
Dropout Voltage
Line Regulation
e_N
PSRR
Load Regulation
Output Noise Voltage
Power Supply Ripple
Rejection Ratio
(V_OUT + 0.25V, 3.0V)_MAX ≤ V_BATT
V_BATT = V_IN ≤ 5.5V
V_OUT = 0V
I_OUT = 100 mA
(V_OUT + 0.25V, 3.0V)_MAX ≤ V_BATT
V_BATT = V_IN ≤ 5.5V, I_OUT = 100 mA
V_IN = 3.6V, 1 mA ≤ I_OUT ≤ 200 mA
10 Hz ≤ f ≤ 100 kHz,
C_OUT = 4.7 µF
f = 217 Hz, C_OUT = 4.7 µF
200
mA
780
70
254
mV
3
mV
10
27
µV_RMS
60
dB
C_OUT
Output Capacitance
Output Capacitor ESR
1 mA ≤ I_OUT ≤ 200 mA
2
20
µF
5
500
mΩ
t_START-UP Start-Up Time from Shutdown ON- C_OUT = 4.7 µF, I_OUT = 200 mA (Note 10)
signal
80
120
180
µs
Note: This LDO will be ON after start up by default.
Note: (V_OUT + 0.25V, 3.0V)_MAX means greater of the two. That is 3.0V if V_OUT < 2.75V.
Note: The PMU can switch off if battery voltage is below 3.0V due to under voltage lockout designed to protect the battery from excessive discharge at low
voltages.
Note: The start-up time (t_START-UP) is defined as the time between the rising edge of ON-, HF_PWR-, RTC ALARM- or CHG_IN- pins going high and activating
the power-up sequence of the LP3941A.
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200945 Version 4 Revision 2 Print Date/Time: 2011/10/25 13:09:13