参数资料
型号: MAX1540AETJ+T
厂商: Maxim Integrated Products
文件页数: 15/49页
文件大小: 0K
描述: IC REG CTRLR DIVIDER PWM 32-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
PWM 型: 电流模式
输出数: 2
频率 - 最大: 620kHz
占空比: 100%
电源电压: 5.5 V ~ 28 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)
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
Typical Operating Characteristics (continued)
(MAX1541 circuit of Figure 12, V IN = 12V, V DD = V CC = 5V, SKIP = GND, TON = REF, T A = +25°C, unless otherwise noted.)
INDUCTOR-SATURATION PROTECTION
INDUCTOR-SATURATION PROTECTION
5A
0
2.5V
0.67V
0.47V
7.5A
( Δ V ILIM = 200mV)
MAX1540A toc25
A
B
C
D
5A
0
2.5V
1.5V
5V
0.67V
0.27V
5A
( Δ V ILIM = 400mV)
MAX1540A toc26
A
B
C
D
E
0
20 μ s/div
0
20 μ s/div
A. I OUT2 = 0 TO 5A, 5A/div
B. 2.5V OUTPUT, 200mV/div
C. ILIM, 200mV/div
D. INDUCTOR CURRENT, 5A/div
A. I OUT2 = 0 TO 5A, 5A/div
B. 2.5V OUTPUT, 1V/div
D. ILIM, 400mV/div
E. INDUCTOR CURRENT, 5A/div
LSAT = REF, L = 3.3 μ H 3.5A
MAX1541
DYNAMIC OUTPUT-VOLTAGE TRANSITION
C. PGOOD, 5V/div
LSAT = REF, L = 3.3 μ H 3.5A
MAX1541
DYNAMIC OUTPUT-VOLTAGE TRANSITION
5V
0
1.5V
1.5V
1V
5V
5A
0
(C REFIN1 = 100pF)
MAX1540A toc27
A
B
C
D
5V
0
1.5V
1.5V
1V
5V
5A
0
(C REFIN1 = 1nF)
MAX1540A toc28
A
B
C
D
E
E
-5A
40 μ s/div
-5A
100 μ s/div
A. GATE, 5V/div
D. PGOOD1, 5V/div
A. GATE, 5V/div
D. PGOOD1, 5V/div
B. OUT1 (1.0V TO 1.5V), 0.5V/div E. INDUCTOR CURRENT, 5A/div
C. REFIN1, 0.5V/div
200mA LOAD, SKIP = GND
B. OUT1 (1.0V TO 1.5V), 0.5V/div E. INDUCTOR CURRENT, 5A/div
C. REFIN1, 0.5V/div
200mA LOAD, SKIP = GND
______________________________________________________________________________________
15
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