LP3918 Datasheet, PDF (10/39 Pages) National Semiconductor (TI) – Battery Charge Management and Regulator Unit

LP3918
SNVS476D – AUGUST 2007 – REVISED MAY 2013
www.ti.com
LDO5 (RX), LDO6 (TX), LDO7 (GP) Electrical Characteristics (continued)
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. ⁽¹⁾
operation, T_a = T_J = −40°C to +125°C. ⁽¹⁾
Symbol
Parameter
Condition
Limit
Typ
Units
Min
Max
V_OUT5, V_OUT6,
V_OUT7
Output Voltage
I_OUT5/6/7 = 1mA, V_OUT5/6/7=
3.0V
−2
+2
%
−3
+3
Output Voltage
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
I_OUT5/6/7 = 150mA ⁽²⁾
180
V_DO7
ΔV_OUT5,
Line Regulation
V_INMIN ≤ V_IN ≤ 5.5V
2
ΔV_OUT6, ΔV_OUT7
I_OUT5/6/7 = 1mA
Load Regulation
1mA≤ I_OUT5/6/7 ≤ 150mA
20
e_n5, e_n6, e_n7
Output Noise Voltage
10Hz ≤ f ≤ 100kHz,
45
C_OUT
=
(3)
1µF
PSRR
Power Supply Rejection
F = 10kHz, C_OUT = 1µF
65
Ratio
I_OUT5/6/7 = 20mA ⁽³⁾
t_START-UP
Start-Up Time from Shut-
C_OUT = 1µF, I_OUT5/6/7 =
40
down
150mA
(3)
150
mA
240
mV
mV
mV
µV_RMS
dB
60
µs
t_Transient
Start-Up Transient
C_OUT = 1µF, I_OUT5/6/7 =
5
Overshoot
150mA
(3)
30
mV
(1) All electrical characteristics having room-temperature limits are tested during production with T_J = 25°C. All hot and cold limits are
specified by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
(2) Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV below its nominal value. This specification
does not apply in cases it implies operation with an input voltage below the 3.0V minimum appearing under Operating Ratings. For
example, this specification does not apply for devices having 1.5V outputs because the specification would imply operation with an input
voltage at or about 1.5V.
(3) Specified by design. Not production tested.
10
Submit Documentation Feedback
Product Folder Links: LP3918
Copyright © 2007–2013, Texas Instruments Incorporated