参数资料
型号: MAX1541ETL+T
厂商: Maxim Integrated Products
文件页数: 8/49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
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V CC = V DD = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T A = -40°C to +85°C , unless otherwise noted.)
(Note 4)
PARAMETER
Shutdown Supply Current (V CC )
Shutdown Supply Current
(V DD , MAX1541 Only)
Shutdown Supply Current (V+)
SYMBOL
CONDITIONS
ON1 = ON2 = LDOON = GND
ON1 = ON2 = LDOON = GND
MAX1540A: ON1 = ON2 = LDOON = GND,
V+ = 28V, V CC = 0 or 5V
MIN
MAX
5
5
15
UNITS
μA
μA
μA
MAX1541: ON1 = ON2 = LDOON = GND,
V+ = 28V, V CC = V DD = 0 or 5V
5
Shutdown Supply Current
(LDOIN, MAX1541 Only)
LDOON = GND
10
μA
PWM CONTROLLERS
Preset output,
FB1 = GND
1.773
1.827
SKIP = V CC
MAX1540A Main Output-Voltage
Accuracy (OUT1) (Note 2)
V OUT1
V FB1
V+ = 5.5V to 28V,
FB1 = V CC
Adjustable output, V+ = 5.5V to 28V,
SKIP = V CC
Preset output,
FB2 = GND
1.182
0.689
2.462
1.218
0.711
2.538
V
MAX1540A Secondary Output-
Voltage Accuracy (OUT2)
V OUT2
V+ = 5.5V to 28V,
SKIP = V CC
FB2 = V CC
1.477
1.523
V
(Note 2)
V FB2
Adjustable output, V+ = 5.5V to 28V,
SKIP = V CC
0.689
0.711
MAX1541 Main Feedback
Voltage Accuracy (FB1)
V FB1
V+ = 4.5V to 28V,
SKIP = V CC
REFIN1 = 0.35 x REF
REFIN1 = REF
0.689
1.97
0.711
2.03
V
Preset output,
FB2 = GND
2.462
2.538
MAX1541 Secondary Output-
Voltage Accuracy (OUT2)
V OUT2
V+ = 4.5V to 28V,
SKIP = V CC
FB2 = V CC
1.773
1.827
V
(Note 2)
V FB2
Adjustable output, V+ = 4.5V to 28V,
SKIP = V CC
TON = GND (620kHz)
0.689
149
0.711
190
DH1 On-Time (Note 3)
t ON1
V+ = 15V,
V OUT1 = 1.5V
TON = REF (485kHz)
TON = open (345kHz)
191
274
242
335
ns
TON = V CC (235kHz)
TON = GND (460kHz)
402
201
491
256
DH2 On-Time (Note 3)
t ON2
V+ = 15V,
V OUT2 = 1.5V
TON = REF (355kHz)
TON = open (255kHz)
260
371
331
453
ns
TON = V CC (170kHz)
556
679
On-Time Tracking
t ON2 with respect to t ON1 (Note 3)
118
152
%
Minimum Off-Time
t OFF(MIN)
(Note 3)
500
ns
LINEAR REGULATOR (LDO) (Note 1)
MAX1540A LDO Output-Voltage
Accuracy
V LDOOUT
ON1 = ON2 = GND,
V+ = 6V to 28V
0 < I LDOOUT < 10mA
0 < I LDOOUT < 100mA
4.85
4.65
5.10
5.10
V
8
_______________________________________________________________________________________
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