LP3927 Datasheet, PDF (6/16 Pages) National Semiconductor (TI) – Cellular/PCS System Power Management IC

Electrical Characteristics, Digital Interface
Symbol
V_OL
V_IH
V_IL
I_LEAKAGE
Parameter
Logic Low Output
Logic High Input
Logic Low Input
Input Leakage Current
Conditions
RST and IRQ
I_LOAD = 250 µA
KYBD and VEXT
EN3–5, PS_HOLD
LED_EN
KYBD and VEXT
EN3–5, PS_HOLD
LED_EN
VEXT, PS_HOLD, IRQ,
KYBD, EN3–5, 0V ≤ V_DD ≤ 5.5V
Typical
Limit
Min
Max
150
Units
mV
0.7 V_DD
V
1.4
0.85V_DD
0.2 V_DD
V
0.4
0.2 V_DD
−10
+10
µA
Electrical Characteristics, Error Flag
Symbol
V_Th-H
V_Th-L
t_DELAY-H
t_DELAY-L
R_DELAY
t_DELAY
t_Hold-UP
Parameter
Error Flag High
Error Flag Low
Keyboard Debounce Delay
VEXT Debounce Delay
RST Reset Delay
LDO Delay, standard
LDO Delay, optional
PS_HOLD Input
Conditions
V_o1 and V_o2 Outputs (Note 11)
(Note 12)
(Note 13)
(Note 13)
(Note 14)
(Note 15)
(Note 16)
Typical
95
90
6
6
32
32
20
125
10
500
Limit
Min
Max
92
98
89
92
0
10
0
10
16
64
16
64
10
40
0
250
5
20
250
1000
Units
% V_OUT
µs
µs
ms
ms
ms
µs
ms
ms
Electrical Characteristics, Backlight LED Driver
Symbol
I_LED
Parameter
Drive Current
Conditions
V_LED = 1V, R_PGM = 130kΩ
Typical
150
Limit
Min
Max
125
175
Units
mA
Electrical Characteristics, Operational Amplifier
Unless otherwise noted, V_{OP_AMP_VDD} = 3.3V, V_CM = V_OUT = V_{OP_AMP_VDD}/2 and R_LOAD > 1 MΩ. 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. (Note 7)
Symbol
Parameter
Conditions
Typical
Limit
Min Max
Units
V_DD
V_OS
TC V_OS
I_B
I_OS
R_IN
CMRR
PSRR
OP_AMP_V_DD
Input Offset Voltage
Offset Voltage Drift
Input Bias Current
Input Offset Current
Input Resistance
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
C_IN
Common-Mode Input Capacitor
0V ≤ V_CM ≤ 2.7V
V_{OP_AMP_VDD} = 2.7V to
3.3V
, V_CM = 0
3.3
3
5.5
V
1.2
10
mV
10
µV/˚C
0.2
nA
0.1
nA
>1
GΩ
70
dB
60
dB
3
pF
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