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參數(shù)資料
| 型號： | LM2633 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Advanced Two-Phase Synchronous Triple Regulator Controller for Notebook CPUs |
| 中文描述： | 先進的兩相同步三穩(wěn)壓控制器用于筆記本處理器 |
| 文件頁數(shù)： | 13/40頁 |
| 文件大小： | 1350K |
| 代理商： | LM2633 |
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Electrical Characteristics
(Continued)
V
= +15V unless otherwise indicated under the
Conditions
column. Typicals and limits appearing in plain type apply for T
A
= T
J
= +25C. Limits appearing in
boldface
type apply over 40C to +125C.
Symbol
Parameter
Conditions
SYSTEM
V
ovp2
V
OUT
Overvoltage
Shutdown Latch
Threshold for Channel 2
(Measured at the FB2)
V
lreg_thr
V
OUT
Low Regulation
Comparator Enable
Threshold for Channels
1 and 2
V
lreg_hys
Hysteresis of Low
Regulation Comparator
V
pwrbad
Regulator Window
Detector Thresholds
(PGOOD from High to
Low)
V
pwrgd
Regulator Window
Detector Thresholds
(PGOOD from Low to
High)
Gate Drive (For Channel 1 Switching Regulator Controller)
I
boot1
CBOOT Leakage
Current
HDRV1 Source Current
V
HDRV1
= V
SW1
=0V, V
CBOOT1
= 5V
HDRV1 Sink Current
V
HDRV1
= 5V
LDRV1 Source Current
V
LDRV1
= 0V
LDRV1 Sink Current
V
LDRV1
= 5V
HDRV1 High-Side FET
On-Resistance
LDRV1 High-Side FET
On-Resistance
LDRV1 Low-Side FET
On-Resistance
Gate Drive (For Channel 2 Switching Regulator Controller)
I
boot2
CBOOT Leakage
Current
HDRV2 Source Current
V
HDRV2
= V
SW2
=0V, V
CBOOT2
= 5V
HDRV2 Sink Current
V
HDRV2
= 5V
LDRV2 Source Current
V
LDRV2
= 0V
LDRV2 Sink Current
V
LDRV2
= 5V
HDRV2 FET
On-Resistance
LDRV2 FET
On-Resistance
Oscillator
F
osc
Oscillator Frequency
T
off_min
Minimum Off-Time
T
on_min
Minimum On-Time
Error Amplifier
I
fb1
Feedback Input Bias
Current, Channel 1
Min
Typ
Max
Units
108
112
116
%V
OUT
91.5
%V
OUT
7
%V
OUT
84
88
%V
OUT
(Note 22)
109
112
120
89
93
98
%V
OUT
V
CBOOT1
= 7V
100
nA
1.2
1.0
1.2
2.0
A
A
A
A
1.84
tbd
0.5
V
CBOOT2
= 7V
100
nA
tbd
tbd
tbd
tbd
A
A
A
A
tbd
tbd
225
250
400
220
275
kHz
ns
ns
V
FB1
= 2.4V
55
μA
L
www.national.com
13
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