参数资料
型号: MAX1997ETJ+
厂商: Maxim Integrated Products
文件页数: 3/31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: 60
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: 管件
Quintuple/Triple-Output TFT LCD Power Supplies
with Fault Protection and VCOM Buffer
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V IN = 3V, V DDB = 10V, SHDN = ONDC = FREQ = IN, C REF = 0.22μF, PGND = GND, T A = 0 ° C to +85 ° C .
Typical values are at T A = +25 ° C, unless otherwise noted.)
PARAMETER
Oscillator Maximum Duty Cycle
FB Regulation Voltage
FB Fault Trip Level
FB Load Regulation
CONDITIONS
I LX = 200mA
V FB falling
I MAIN = 0 to full load
MIN
80
1.229
0.96
TYP
85
1.242
1.00
-1.6
MAX
90
1.254
1.04
UNITS
%
V
V
%
FB Line Regulation
FB Input Bias Current
LX On-Resistance
V IN = 2.7V to 5.5V
V FB = 1.5V
-100
0.2
250
0.4
+100
450
%/V
nA
m ?
LX Leakage Current
LX Current Limit
LX RMS Current Rating
Soft-Start Period
Soft-Start Step Size
V LX = 13V
(Note 2)
1.6
0.01
2.1
4096/f OSC
V REF /32
20
2.8
1.4
μA
A
A
s
V
POSITIVE LINEAR-REGULATOR CONTROLLERS (REG P, REG 1, AND REG 2)
I DRVP = 100μA
FB_ Regulation Voltage
I DRV1 = 1350μA (MAX1997 only)
1.225
1.250
1.275
V
I DRV2 = 335μA (MAX1997 only)
FB_ Fault Trip Level
FB_ Input Bias Current
V FB _ falling
V FB _ = 1.25V
0.96
-250
1.00
1.04
+250
V
nA
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)
-1.5
-2
%
V DRV2 = 10V, I DRV2 = 0.1mA to 2mA
(MAX1997 only)
I DRVP = 100μA, 2.7V < V IN < 5.5V
I DRV1 = 1350μA, 2.7V < V IN < 5.5V
FB_ Line (IN) Regulation Error
(MAX1997 only)
1
mV
I DRV2 = 335μA, 2.7V < V IN < 5.5V
(MAX1997 only)
Bandwidth
DRVP Sink Current
(Note 2)
1000
2
3.3
kHz
DRV1 Sink Current (MAX1997 only)
DRV2 Sink Current (MAX1997 only)
V FB _ = 1.1V, V DRV _ = 10V
5
5
18
15
mA
DRV_ Leakage Current
Soft-Start Period
Soft-Start Step Size
V FB _ = 1.5V, V DRV _ = 28V
0.1
4096/f OSC
V REF /32
10
μA
s
V
NEGATIVE LINEAR-REGULATOR CONTROLLER (REG N)
FBN Regulation Voltage
FBN Fault Trip Level
FBN Input Bias Current
I DRVN = 100μA
V FBN rising
V FBN = 0V
95
325
-200
125
370
155
475
+200
mV
mV
nA
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