LP3918 Datasheet, PDF (9/30 Pages) National Semiconductor (TI) – Battery Charge Management and Regulator Unit

LDO5 (RX), LDO6 (TX), LDO7 (GP) Electrical Characteristics
Unless otherwise noted, V_IN ( = VIN1 = VIN2 = BATT) = 3.6V, GND = 0V, C_VIN1-2=10µF, C_LDOX=1µF. RX_EN, TX_EN high. LDO7
Enabled via Serial Interface. Note V_INMIN is the greater of 3.0V or V_OUT5/6/7 + 0.5V. 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_a =
T_J = −40°C to +125°C. (Note 6)
Symbol
Parameter
Condition
Limit
Typ
Units
Min
Max
V_OUT5,
Output Voltage
V_OUT6, V_OUT7
Output Voltage
I_OUT5/6/7 = 1mA, V_OUT5/6/7= 3.0V
−2
+2
%
−3
+3
LDO5 default
3.0
V
LDO6 default
3.0
LDO7 default
3.0
I_OUT5, I_OUT6, Output Current
V_INMIN ≤ V_IN ≤ 5.5V
I_OUT7
Output Current Limit
V_OUT5/6/7 = 0V
300
V_DO5, V_DO6, Dropout Voltage
V_DO7
I_OUT5/6/7 = 150mA (Note 8)
180
ΔV_OUT5,
Line Regulation
V_INMIN ≤ V_IN ≤ 5.5V
2
ΔV_OUT6,
I_OUT5/6/7 = 1mA
ΔV_OUT7
Load Regulation
1mA ≤ I_OUT5/6/7 ≤ 150mA
20
e_n5, e_n6, e_n7 Output Noise Voltage
10Hz ≤ f ≤ 100kHz,
45
C_{OUT = 1µF (Note 7)}
PSRR
Power Supply Rejection Ratio
F = 10kHz, C_OUT = 1µF
65
I_OUT5/6/7 = 20mA (Note 7)
t_START-UP
Start-Up Time from Shut-down
C_OUT = 1µF, I_OUT5/6/7 = 150mA
40
(Note 7)
150
mA
240
mV
mV
mV
µV_RMS
dB
60
µs
t_Transient
Start-Up Transient Overshoot
C_OUT = 1µF, I_OUT5/6/7 = 150mA
5
(Note 7)
30
mV
9
www.national.com