參數(shù)資料
型號(hào)： LM2633MTDX/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 275 kHz SWITCHING FREQ-MAX, PDSO48
封裝： TSSOP-48
文件頁數(shù)： 5/40頁
文件大?。?/td> 1350K
代理商： LM2633MTDX/NOPB
Electrical Characteristics (Continued)
V
CC = +15V unless otherwise indicated under the Conditions column. Typicals and limits appearing in plain type apply for TA
=T
J = +25C. Limits appearing in boldface type apply over 40C to +125C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM
V
ovp2
V
OUT Overvoltage
Shutdown Latch
Threshold for Channel 2
(Measured at the FB2)
108
112
116
%V
OUT
V
lreg_thr
V
OUT Low Regulation
Comparator Enable
Threshold for Channels
1 and 2
91.5
%V
OUT
V
lreg_hys
Hysteresis of Low
Regulation Comparator
7%V
OUT
V
pwrbad
Regulator Window
Detector Thresholds
(PGOOD from High to
Low)
84
88
%V
OUT
109
112
120
V
pwrgd
Regulator Window
Detector Thresholds
(PGOOD from Low to
High)
89
93
98
%V
OUT
Gate Drive (For Channel 1 Switching Regulator Controller)
I
boot1
CBOOT Leakage
Current
V
CBOOT1 =7V
100
nA
HDRV1 Source Current
V
HDRV1 =VSW1 =0V, VCBOOT1 = 5V
1.2
A
HDRV1 Sink Current
V
HDRV1 = 5V
1.0
A
LDRV1 Source Current
V
LDRV1 = 0V
1.2
A
LDRV1 Sink Current
V
LDRV1 = 5V
2.0
A
HDRV1 High-Side FET
On-Resistance
1.84
LDRV1 High-Side FET
On-Resistance
tbd
LDRV1 Low-Side FET
On-Resistance
0.5
Gate Drive (For Channel 2 Switching Regulator Controller)
I
boot2
CBOOT Leakage
Current
V
CBOOT2 =7V
100
nA
HDRV2 Source Current
V
HDRV2 =VSW2 =0V, VCBOOT2 = 5V
tbd
A
HDRV2 Sink Current
V
HDRV2 = 5V
tbd
A
LDRV2 Source Current
V
LDRV2 = 0V
tbd
A
LDRV2 Sink Current
V
LDRV2 = 5V
tbd
A
HDRV2 FET
On-Resistance
tbd
LDRV2 FET
On-Resistance
tbd
Oscillator
F
osc
Oscillator Frequency
225
250
275
kHz
T
off_min
Minimum Off-Time
400
ns
T
on_min
Minimum On-Time
220
ns
Error Amplifier
I
fb1
Feedback Input Bias
Current, Channel 1
V
FB1 = 2.4V
55
A
LM2633
www.national.com
13
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