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)
V_DD1, V_DD2, V_DD3, KYBD, OP_AMP_V_DD 3.0V to 5.5V
EN3, EN4, EN5
−0.3V to (V_DD + 0.3V)
C_OUT:
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)
θ_JA (LLP28)
Maximum Power Dissipation (Note 6)
30.8˚C/W
1.78W
Electrical Characteristics, LDO’s
Unless otherwise noted, V_DD = V_OUT(target) + 0.7V, C_IN (V_DD1, V_DD2, V_DD3) = 4.7 µF, C_OUT (VO1 to VO5) = 2.2 µF, C_byp =
0.1 µF. 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˚C to +85˚C. (Notes 7, 8)
Symbol
Parameter
Conditions
Typical
Limit
Min Max
Units
V_DD
∆V_OUT
Input Voltage Range
Output Voltage Tolerance
Load Regulation
Line Regulation
Total Accuracy Error
V_DD1, V_DD2, V_DD3,KYBD
I_OUT = I_MAX/2,
V_DD = 3.7V
I_OUT = 100 µA to I_MAX,
V_DD = 3.7V
V_DD = V_OUT(target) +0.7V to 5.5V
I_OUT = I_MAX/2
3.7
3
5.5
V
−2
+2
%
−2
+2
%
−40
+40
mV
−3.5 +3.5
%
V_IN - V_OUT Dropout Voltage
I_OUT = I_MAX (Note 9)
100
170
mV
200
e_N
Output Noise Voltage
I_OUT = 100 µA,
10 Hz ≤ f ≤ 100 kHz
27
PSRR
Power Supply Ripple
C_IN = 2.2µF, I_OUT = I_MAX,
Rejection Ratio
f = 100 Hz
45
f = 1 kHz
45
f = 10 kHz
30
f = 100 kHz
10
µV_rms
dB
Cross Talk
(Note 10)
30
dB
I_Q
I_GND
Quiescent Current
Ground Current
I_OUT = 0, PS_HOLD = KYBD = 0
VEXT = V_DD
I_OUT1 = I_OUT2 = 1 mA,
100
LDO3, LDO4, LDO5 OFF
5
µA
8
200
µA
I_SC
C_OUT
R_SHUNT
I_OUT1, I_OUT2, I_OUT3, I_OUT4, I_OUT5 = I_MAX
400
Short Circuit Current Limit V_OUT = 0V
400
Output Capacitor
Capacitance
ESR
V_O2 - V_O5 Output Shunt
70
Resistor
950
% of I_MAX
1
20
µF
5
500
mΩ
200
Ω
5
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