参数资料
型号: MAX8655ETN+
厂商: Maxim Integrated Products
文件页数: 4/23页
文件大小: 0K
描述: IC REG BUCK ADJ 25A 56TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 37
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.7 V ~ 5.5 V
输入电压: 4.5 V ~ 25 V
PWM 型: 电流模式
频率 - 开关: 200kHz ~ 1MHz
电流 - 输出: 25A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 56-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 56-TQFN-EP(8x8)
Highly Integrated, 25A, Wide-Input,
Internal MOSFET, Step-Down Regulator
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 12V, V BST - V LX = 6.5V, T A = -40°C to +85°C, circuit of Figure 4, typical values are at T A = +25°C, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
Switching Frequency
Minimum Off-Time
Minimum On-Time
FSYNC Synchronization Range
R FSYNC = 21.0k ?
R FSYNC = 143k ?
Measured at LX
Measured at LX
800
160
160
1000
200
235
75
1200
240
100
1200
kHz
ns
ns
kHz
FSYNC Input High Pulse Width
FSYNC Input Low Pulse Width
FSYNC Rise/Fall Time
SYNCO Phase Shift
100
100
180
100
ns
ns
ns
Degrees
SYNCO Output Low Level
SYNCO Output High Level
FSYNC Input Low
FSYNC Input High
I SYNCO = 5mA
I SYNCO = -5mA
V AVL - 1V
2.5
0.4
0.4
V
V
V
V
THERMAL PROTECTION
Thermal Shutdown
Thermal-Shutdown Hysteresis
Rising temperature
+160
15
°C
°C
POK
POK Threshold
POK Output Voltage, Low
POK Leakage Current, High
REFIN = AVL, V FB rising, typical hysteresis is 3%
V REFIN = 0.75V to 1.5V, V FB rising, typical hysteresis is 3%
V FB = 0.6V, I POK = 2mA
V POK = 5.5V
629
88.7
650
91.7
25
671
94.7
200
1
mV
%
mV
μA
OVP
OVP Threshold Voltage
OVP, Leakage Current, High
REFIN = AVL
V REFIN = 0.7V to 1.5V
V OVP = 0.8V
770
110
800
115
840
120
500
mV
%
nA
MODE CONTROL
MODE Logic-Level Low
MODE Logic-Level High
4.5V ≤ V AVL ≤ 5.5V
4.5V ≤ V AVL ≤ 5.5V
1.8
0.4
V
V
MODE Input Current
V MODE = 0 to V AVL
-1
+1
μA
SHUTDOWN CONTROL
EN Logic-Level Low
EN Logic-Level High
4.5V ≤ V AVL ≤ 5.5V
4.5V ≤ V AVL ≤ 5.5V
2
0.45
V
V
EN Input Current
V EN = 0V
V EN = 28V
-1
1.5
+1
6.0
μA
Note 2: Specifications are 100% production tested at T A = +85°C. Limits over the operating temperature range are guaranteed by
design.
4
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