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LP3927 Datasheet, PDF (5/16 Pages) National Semiconductor (TI) – Cellular/PCS System Power Management IC
Absolute Maximum Ratings (Notes 1,
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
All pins except LED_PGM,
BYP, op amp’s inputs & output
OP_AMP_OUT, IN-, IN+
GND to GND SLUG
Junction Temperature
Storage Information
Soldering Temperature
Pad Temperature
Maximum Power Dissipation (Note 3)
ESD (Note 4):
KYBD
−0.3V to 6.0V
-0.3V to 5.5V
±0.3V
150˚C
−65˚C to 150˚C
235˚C
2.6W
4 kV
All other pins
2 kV
Operating Ratings (Notes 1, 2)
VDD1, VDD2, VDD3, KYBD, OP_AMP_VDD 3.0V to 5.5V
EN3, EN4, EN5
−0.3V to (VDD + 0.3V)
COUT:
Capacitance
1.0 µF to 20.0 µF
ESR
0.005Ω to 0.5Ω
Junction Temperature
−40˚C to 125˚C
Operating Temperature
−40˚C to 85˚C
Thermal Resistance (Note 5)
θJA (LLP28)
Maximum Power Dissipation (Note 6)
30.8˚C/W
1.78W
Electrical Characteristics, LDO’s
Unless otherwise noted, VDD = VOUT(target) + 0.7V, CIN (VDD1, VDD2, VDD3) = 4.7 µF, COUT (VO1 to VO5) = 2.2 µF, Cbyp =
0.1 µF. Typical values and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in boldface type apply over
the entire junction temperature range for operation, −40˚C to +85˚C. (Notes 7, 8)
Symbol
Parameter
Conditions
Typical
Limit
Min Max
Units
VDD
∆VOUT
Input Voltage Range
Output Voltage Tolerance
Load Regulation
Line Regulation
Total Accuracy Error
VDD1, VDD2, VDD3,KYBD
IOUT = IMAX/2,
VDD = 3.7V
IOUT = 100 µA to IMAX,
VDD = 3.7V
VDD = VOUT(target) +0.7V to 5.5V
IOUT = IMAX/2
3.7
3
5.5
V
−2
+2
%
−2
+2
%
−40
+40
mV
−3.5 +3.5
%
VIN - VOUT Dropout Voltage
IOUT = IMAX (Note 9)
100
170
mV
200
eN
Output Noise Voltage
IOUT = 100 µA,
10 Hz ≤ f ≤ 100 kHz
27
PSRR
Power Supply Ripple
CIN = 2.2µF, IOUT = IMAX,
Rejection Ratio
f = 100 Hz
45
f = 1 kHz
45
f = 10 kHz
30
f = 100 kHz
10
µVrms
dB
Cross Talk
(Note 10)
30
dB
IQ
IGND
Quiescent Current
Ground Current
IOUT = 0, PS_HOLD = KYBD = 0
VEXT = VDD
IOUT1 = IOUT2 = 1 mA,
100
LDO3, LDO4, LDO5 OFF
5
µA
8
200
µA
ISC
COUT
RSHUNT
IOUT1, IOUT2, IOUT3, IOUT4, IOUT5 = IMAX
400
Short Circuit Current Limit VOUT = 0V
400
Output Capacitor
Capacitance
ESR
VO2 - VO5 Output Shunt
70
Resistor
950
% of IMAX
1
20
µF
5
500
mΩ
200
Ω
5
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