参数资料
型号: MAX1761EEE+T
厂商: Maxim Integrated Products
文件页数: 3/23页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 16-QSOP
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: 428kHz
电源电压: 4.5 V ~ 20 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: 16-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
Small, Dual, High-Efficiency
Buck Controller for Notebooks
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, C VL = 4.7μF, C REF = 0.1μF, VL not externally driven unless otherwise noted, T A = 0 ° C to +85 ° C , unless
otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
FAULT PROTECTION
Output Undervoltage Threshold
(Foldback)
V FB,UVFB
With respect to the regulation point, no load
60
70
80
%
Output Undervoltage Blanking
Time
V FB,UVLO(t) Measured from ON_ signal going high
GND - CS_, positive direction
10
92
100
32
108
ms
Current-Limit Threshold
GND - CS_, negative direction, ON2 = floating
-135
-120
-105
mV
GND - CS_, zero crossing, ON2 = 5V
2.5
Thermal Shutdown Threshold
Hysteresis = 10 o C
160
o
C
VL Undervoltage Lockout
Threshold
V VL,UVLO
Rising edge, hysteresis = 20mV, PWM is
disabled below this voltage
4.1
4.4
V
GATE DRIVERS
DH_ Gate Driver On-Resistance
(Pullup)
DH_ Gate Driver On-Resistance
(Pulldown)
DL_ Gate Driver On-Resistance
(Pullup)
DL_ Gate Driver On-Resistance
(Pulldown)
DH_ Gate Driver Source/Sink
Current
DL_ Gate Drive Sink Current
DL_ Gate Drive Source Current
V+ = 6V to 20V, DH_, high state
DH_, low state
DL_ , high state
DL_, low state
V DH_ = 3V, V+ = 6V
V DL_ = 2.5V
V DL_ = 2.5V
3.7
6.2
3.4
2.0
0.6
0.9
0.5
8
10
8
5
?
?
?
?
A
A
A
LOGIC CONTROLS
ON_ Logic Input High Voltage
2.05
V
ON2 Logic Input Float Voltage
(Forced-PWM Mode)
2.0V < V ON1 < VL
1.3
1.7
1.95
V
ON_ Logic Input Low Voltage
0.5
V
ON1 Logic Input Current
-1
1
μA
ON2 Logic High Input Current
ON2 Logic Low Input Current
FB_ Dual Mode Threshold
V ON2 > 2.0V
V ON2 < 0.5V, V ON1 > 2.0V
0
-2
50
1
-1
100
3
0
150
μA
μA
mV
_______________________________________________________________________________________
3
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