參數(shù)資料
型號: LP3927ILQ-AH
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: Cellular/PCS System Power Management IC
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, CQCC28
封裝: LLP-28
文件頁數(shù): 6/16頁
文件大?。?/td> 326K
代理商: LP3927ILQ-AH
Electrical Characteristics, Digital Interface
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
Max
150
V
OL
Logic Low Output
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
mV
V
IH
Logic High Input
0.7 V
DD
1.4
0.85V
DD
V
V
IL
Logic Low Input
0.2 V
DD
0.4
0.2 V
DD
+10
V
I
LEAKAGE
Input Leakage Current
10
μA
Electrical Characteristics, Error Flag
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
92
89
0
0
16
16
10
0
5
250
Max
98
92
10
10
64
64
40
250
20
1000
V
Th-H
V
Th-L
t
DELAY-H
t
DELAY-L
Error Flag High
Error Flag Low
V
o1
and V
o2
Outputs (Note 11)
95
90
6
6
32
32
20
125
10
500
% V
OUT
(Note 12)
μs
μs
ms
ms
ms
μs
ms
ms
Keyboard Debounce Delay
VEXT Debounce Delay
RST Reset Delay
LDO Delay, standard
LDO Delay, optional
PS_HOLD Input
(Note 13)
(Note 13)
(Note 14)
(Note 15)
R
DELAY
t
DELAY
t
Hold-UP
(Note 16)
Electrical Characteristics, Backlight LED Driver
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
125
Max
175
I
LED
Drive Current
V
LED
= 1V, R
PGM
= 130k
150
mA
Electrical Characteristics, Operational Amplifier
Unless otherwise noted, V
= 3.3V, V
= V
= V
OP_AMP_VDD
/2 and R
>
1 M
. Typical values and limits
appearing in normal type apply for T
J
= 25C. Limits appearing in
type apply over the entire junction temperature
range for operation, 40C to +85C. (Note 7)
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
3
Max
5.5
10
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
3.3
1.2
10
0.2
0.1
>
1
70
60
V
mV
μV/C
nA
nA
G
dB
dB
0V
V
CM
2.7V
V
OP_AMP_VDD
= 2.7V to
3.3V
, V
CM
= 0
C
IN
Common-Mode Input Capacitor
3
pF
L
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