参数资料
型号: MAX1954AEUB+T
厂商: Maxim Integrated Products
文件页数: 2/18页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 10-UMAX
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: 1
频率 - 最大: 360kHz
占空比: 93%
电源电压: 3 V ~ 13.2 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: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
Low-Cost, Current-Mode PWM Buck
Controller with Foldback Current Limit
ABSOLUTE MAXIMUM RATINGS
IN, FB to GND...........................................................-0.3V to +6V
LX to BST..................................................................-6V to +0.3V
BST to GND ............................................................-0.3V to +20V
DH to LX ................................................... -0.3V to (V BST + 0.3V)
DL, COMP to GND.......................................-0.3V to (V IN + 0.3V)
HSD to GND..............................................................-0.3V to 14V
Continuous Power Dissipation (T A = +70 ° C)
10-Pin μMAX (derate 5.6mW/ ° C above +70 ° C) ...........444mW
Operating Temperature Range ...........................-40 ° C to +85 ° C
Junction Temperature ......................................................+150 ° C
Storage Temperature Range ............................+65 ° C to +150 ° C
Lead Temperature (soldering, 10s) .................................+300 ° C
PGND to GND .......................................................-0.3V to +0.3V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V IN = 5V, V BST - V LX = 5V, T A = 0 ° C to +85 ° C , unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
Operating Input Voltage Range
3.0
5.5
V
HSD Voltage Range
Quiescent Supply Current
Standby Supply Current
(Note 1)
V FB = 1.5V
V IN = V BST = 5.5V, V HSD = 13.2V, LX = unconnected,
COMP = GND
3.0
1
13.2
2
2
V
mA
mA
Undervoltage-Lockout Trip Level
Falling V IN , 50mV (typ) hysteresis
2.5
2.7
2.9
V
DC-DC CONTROLLER
Output-Voltage Adjust Range
(V OUT )
Maximum output voltage depends on external components
and maximum duty cycle
0.8
V
ERROR AMPLIFIER
FB Regulation Voltage
Transconductance
Voltage Gain
FB Input Leakage Current
FB Input Common-Mode Range
COMP Output-Voltage Swing
Current-Sense Amplifier
Voltage Gain
V FB = 0.9V
-1.0
70
-0.1
0.80
3.15
+0.8
110
200
50
3.5
+1.0
160
500
+1.5
2.36
3.85
%
μS
V/ V
NA
V
V
V/V
Current-Limit Threshold
V PGND - V LX
V FB = 0.8V
V FB = 0V
110
21
135
36
145
51
mV
OSCILLATOR
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
MAX1954A
Measured at DH
V COMP = 1.25V, LX = GND, V BST = V IN = 3.3V
240
89
300
91
2.5
360
93
3
kHz
%
%
2
_______________________________________________________________________________________
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