参数资料
型号: MAX1531ETJ+T
厂商: Maxim Integrated Products
文件页数: 7/33页
文件大小: 0K
描述: IC PS CTRLR MULTI-OUTPUT 32TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 五路电源监控器
电源电压: 4.5 V ~ 28 V
电流 - 电源: 1.7mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-TQFN-EP(5x5)
包装: 带卷 (TR)
Multiple-Output Power-Supply
Controllers for LCD Monitors
Typical Operating Characteristics
(Circuit of Figure 1; including R5, R6, and D2; T A = +25°C, unless otherwise noted.)
STEP-DOWN EFFICIENCY vs. LOAD CURRENT
100
0
STEP-DOWN LOAD REGULATION
SWITCHING FREQUENCY vs. LOAD CURRENT
520
f SW = 500kHz
515
90
80
V IN = 12V
V IN = 20V
-0.04
510
505
70
-0.08
500
495
60
50
-0.12
-0.16
490
485
480
0
300
600
900
1200
1500
0
300
600
900
1200
1500
0
300
600
900
1200
1500
LOAD CURRENT (mA)
LOAD CURRENT (mA)
STEP-DOWN REGULATOR
LOAD CURRENT (mA)
STEP-DOWN REGULATOR
STEP-DOWN REGULATOR LOAD TRANSIENT
MAX1530 toc04
A
0A
B
3.3V
SWITCHING WAVEFORM
MAX1530 toc05
A
0V
B
3.3V
SOFT-START
MAX1530 toc06
0V
A
B
0V
C
C
0A
0A
0A
C
0
40 μ s/div
A: LOAD CURRENT, 1A/div
B: OUTPUT VOLTAGE, 200mV/div, AC-COUPLED
C: INDUCTOR CURRENT, 1A/div
VL LOAD REGULATION
2 μ s/div
A: LX, 10V/div
B: OUTPUT VOLTAGE, 20 mV/div, AC-COUPLED
C: INDUCTOR CURRENT, 1A/div
STARTUP SEQUENCE
MAX1530 toc08
A
15
1ms/div
A: EN, 2V/div
B: OUTPUT VOLTAGE, 2V/div
C: INDUCTOR CURRENT, 1A/div
LR1 BASE CURRENT
vs. DRV1 VOLTAGE
V FBL1 = 1.175V
-0.1
-0.2
-0.3
-0.4
-0.5
B
C
D
E
F
G
12
9
6
3
0
0
5
10
15
20
25
30
4ms/div
0
2
4
6
8
10
LOAD CURRENT (mA)
A: V L , 10V/div
B: V OUT , 5V/div
C: V LOGIC , 5V/div
E: V GAMMA , 20V/div
F: V GOFF , 20V/div
G: V GON , 40V/div
DRV1 VOLTAGE (V)
_______________________________________________________________________________________
D: V SOURCE , 20V/div
7
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