参数资料
型号: MAX1997ETJ+T
厂商: Maxim Integrated Products
文件页数: 5/31页
文件大小: 0K
描述: IC PWR SUPPLY TFT LCD 32TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 控制器,TFT LCD
输入电压: 2.7 V ~ 5.5 V
输出数: 5
输出电压: 2.7 V ~ 13 V
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-TQFN-EP(5x5)
包装: 带卷 (TR)
Quintuple/Triple-Output TFT LCD Power Supplies
with Fault Protection and VCOM Buffer
ELECTRICAL CHARACTERISTICS
(V IN = 3V, V DDB = 10V, SHDN = ONDC = FREQ = IN, C REF = 0.22μF, PGND = GND, T A = -40 ° C to +85 ° C , unless otherwise noted.)
(Note 3)
PARAMETER
IN Supply Range
CONDITIONS
MIN
2.7
TYP
MAX
5.5
UNITS
V
IN Undervoltage Lockout Threshold
350mV typ
hysteresis
V IN rising
V IN falling
2.5
2.2
2.9
2.5
V
IN Quiescent Current (Note 1)
V FB = V FBP = V FB1 = V FB2 = 1.5V, V FBN = 0
(MAX1997 only)
V FB = V FBP = 1.5V, V FBN = 0 (MAX1998 only)
1.25
1
mA
REF Output Voltage
-2μA < I REF < 50μA
-2μA < I REF < 75μA
1.223
1.218
1.270
1.280
V
OVERCURRENT COMPARATOR
Input Offset Voltage
Input Bias Current
OCN, OCP Input Common-Mode Range
V OCN = V OCP = 1.5V to 0.8V × V IN
V OCN = V OCP = 0.8V × V IN
-5
-50
1.5
+5
+50
0.8 ×
V IN
mV
nA
V
MAIN STEP-UP REGULATOR
Output Voltage Range
FREQ = IN
V IN
1
13
2
V
Operating Frequency
Oscillator Maximum Duty Cycle
FB Regulation Voltage
FB Fault Trip Level
FB Input Bias Current
LX On-Resistance
LX Current Limit
FREQ unconnected
FREQ = GND
I LX = 200mA
V FB falling
V FB = 1.5V
0.563
0.25
78
1.215
0.96
-100
1.6
0.937
0.50
92
1.260
1.04
+100
450
2.8
MHz
%
V
V
nA
m ?
A
POSITIVE LINEAR-REGULATOR CONTROLLERS (REG P, REG 1, AND REG 2)
I DRVP = 100μA
FB_ Regulation Voltage
I DRV1 = 1350μA (MAX1997 only)
1.213
1.288
V
I DRV2 = 335μA (MAX1997 only)
FB_ Fault Trip Level
V FB _ falling
0.96
1.04
V
V DRVP = 10V, I DRVP = 0.05mA to 1mA
FB_ Effective Load Regulation Error
(Transconductance)
V DRV1 = 10V, I DRV1 = 0.5mA to 5mA
(MAX1997 only)
-2.5
%
V DRV2 = 10V, I DRV2 = 0.1mA to 2mA
(MAX1997 only)
DRVP Sink Current
1
DRV1 Sink Current (MAX1997 Only)
DRV2 Sink Current (MAX1997 Only)
V FB _ = 1.1V, V DRV _ = 10V
5
5
mA
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5
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