参数资料
型号: MAX1541ETL+T
厂商: Maxim Integrated Products
文件页数: 13/49页
文件大小: 0K
描述: IC REG CTRLR DIVIDER PWM 40-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: 2 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: 40-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.)
SHUTDOWN WAVEFORM
2.5V OUTPUT LOAD TRANSIENT
(DISCHARGE MODE ENABLED)
MAX1540A toc17
(FORCED PWM)
MAX1540A toc18
3.3V
0
2.5V
0
0
5V
0
5V
0
1ms/div
A. ON2, 5V/div
B. OUT2, 2V/div
C. INDUCTOR CURRENT,
2A/div
D. DL2, 5V/div
E. PGOOD2, 5V/div
A
B
C
D
E
4A
0
2.6V
2.5V
2.4V
4A
0
12V
0
40 μ s/div
A. I OUT2 = 0 TO 4A, 5A/div
B. V OUT2 = 2.5V, 100mV/div
SKIP = V CC
A
B
C
D
C. INDUCTOR CURRENT, 5A/div
D. LX2, 10V/div
100 Ω LOAD, OVP/UVP = V CC OR OPEN
2.5V OUTPUT LOAD TRANSIENT
LINEAR-REGULATOR
4A
0
2.6V
2.5V
2.4V
4A
(PULSE SKIPPING)
MAX1540A toc19
A
B
100mA
0
3.4V
LOAD TRANSIENT
MAX1540A toc20
A
C
0
12V
0
D
40 μ s/div
A. I OUT2 = 0.1A TO 4A, 5A/div C. INDUCTOR CURRENT, 5A/div
3.3V
3.2V
100 μ s/div
A. I LDOOUT = 1mA TO 100mA, 50mA/div
B
B. V OUT2 = 2.5V, 100mV/div
SKIP = GND
D. LX2, 10V/div
B. V LDOOUT = 3.3V, 100mV/div
SKIP = GND
______________________________________________________________________________________
13
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