参数资料
型号: MAX5951ETJ+T
厂商: Maxim Integrated Products
文件页数: 6/25页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 32-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
PWM 型: 电压模式
输出数: 1
频率 - 最大: 1MHz
占空比: 88%
电源电压: 4.5 V ~ 16 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 32-WFQFN 裸露焊盘
包装: 带卷 (TR)
12V/5V Input Buck PWM Controller
Typical Operating Characteristics (continued)
( Typical Operating Circuits . V IN = 12V or V IN = V REG = 5V, V DREG = V REG , V PGND = 0V, V SYNCIN = 0V, R RT = 49.9k ? , R ILIM = 48.7k ? ,
C REG = 2.2μF, T A = +25°C.)
5.15
5.10
REG OUTPUT VOLTAGE
vs. LOAD CURRENT
5.06
5.04
REG OUTPUT VOLTAGE
vs. INPUT VOLTAGE
1000
900
800
SWITCHING FREQUENCY
vs. R RT
5.05
5.00
4.95
5.02
5.00
700
600
500
400
4.90
4.85
4.98
4.96
300
200
100
0
10
20
30
40
50
8
10
12
14
16
50 100 150 200 250 300 350 400 450 500
10
9
8
I REG (mA)
SWITCHING PERIOD
vs. R RT
1030
1020
PWM_IN (V)
SWITCHING FREQUENCY
vs. TEMPERATURE
R RT = 49.9k ?
808
804
R RT (k ? )
FB REFERENCE VOLTAGE
vs. TEMPERATURE
7
6
5
4
1010
1000
990
800
796
3
2
1
980
970
792
788
50 100 150 200 250 300 350 400 450 500
-40
-15
10
35
60
85
-40
-15
10
35
60
85
R RT (k ? )
OPEN-LOOP GAIN/PHASE
vs. FREQUENCY
TEMPERATURE ( ° C)
VALLEY CURRENT-LIMIT THRESHOLD
vs. V ILIM
TEMPERATURE ( ° C)
VALLEY CURRENT-LIMIT THRESHOLD
vs. TEMPERATURE
100
90
80
MAX5951 toc09
200
180
350
300
140
130
R ILIM = 48.7k ?
70
160
120
60
50
40
30
20
10
0
-10
-20
140
120
100
80
60
40
250
200
150
100
50
110
100
90
80
70
60
0
10
100
1k
10k
100k
1M
10M
500
1000
1500
2000
2500
3000
3500
-40
-15
10
35
60
85
FREQUENCY (Hz)
V ILIM (mV)
TEMPERATURE ( ° C)
6
_______________________________________________________________________________________
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