参数资料
型号: MAX1540AETJ+T
厂商: Maxim Integrated Products
文件页数: 5/49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
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V CC = V DD = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T A = 0°C to +85°C , unless otherwise noted. Typical
values are at T A = +25 ° C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE (REF)
Reference Voltage
Reference Load Regulation
V REF
Δ V REF
V CC = 4.5V to 5.5V,
I REF = 0V
I REF = -10μA to +50μA
T A = +25°C to +85 ° C
T A = 0°C to +85°C
1.986
1.983
-0.01
2.00
2.00
2.014
2.017
+0.01
V
V
REF Lockout Voltage
V REF(UVLO) Rising edge, hysteresis = 350mV
1.95
V
REFIN1 (MAX1541)
Voltage Range
REFIN1 (MAX1541)
Input Bias Current
V REFIN
I REFIN1
0.7
0.01
V REF
0.05
V
μA
FAULT DETECTION
Overvoltage Trip Threshold
Overvoltage Fault-Propagation
Delay
Output Undervoltage-Protection
Trip Threshold
t OVP
With respect to error-comparator threshold,
OVP/UVP = V CC
FB forced 2% above trip threshold
With respect to error-comparator threshold,
OVP/UVP = V CC
12
65
16
10
70
20
75
%
μs
%
Output Undervoltage-Protection
Blanking Time
Output Undervoltage Fault-
Propagation Delay
t BLANK
t UVP
From rising edge of ON_
10
10
35
ms
μs
PGOOD_ Lower Trip Threshold
PGOOD_ Upper Trip Threshold
PGOOD_ Propagation Delay
PGOOD_ Output Low Voltage
PGOOD_ Leakage Current
t PGOOD _
I PGOOD _
With respect to error-comparator threshold,
hysteresis = 1%
With respect to error-comparator threshold,
hysteresis = 1%
FB forced 2% beyond PGOOD_ trip threshold
I SINK = 4mA
FB = REF (PGOOD high impedance),
PGOOD forced to 5.5V
-13
+7
-10
+10
10
-7
+13
0.3
1
%
%
μs
V
μA
Fault-Blanking Time
(MAX1541 Only)
t FBLANK
FBLANK = V CC
FBLANK = open
120
80
220
140
320
205
μs
FBLANK = REF
35
65
95
Thermal-Shutdown Threshold
T SHDN
Hysteresis = 10°C
LDOON = V CC
LDOON = GND
+150
+160
°C
V CC Undervoltage-Lockout
Threshold
V UVLO(VCC)
Rising edge, PWM disabled below this
level, hysteresis = 20mV
4.1
4.25
4.4
V
CURRENT LIMIT
ILIM_ Adjustment Range
0.25
2
V
Current-Limit Input Range
CSP_/CSN_ Input Current
CSP_
CSN_
0
-0.3
2.7
+28
0.5
V
μA
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5
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