参数资料
型号: MAX1778EUG+
厂商: Maxim Integrated Products
文件页数: 18/39页
文件大小: 0K
描述: IC DCDC CONV MULTI OUT 24TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 62
应用: 转换器,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: 24-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 24-TSSOP
包装: 管件
MAX1778/MAX1880–MAX1885
Quad-Output TFT LCD DC/DC
Converters with Buffer
Pin Description (continued)
PIN
MAX1778
MAX1881
MAX1880
MAX1882
MAX1883
MAX1884
MAX1885
NAME
FUNCTION
Linear Regulator Output. Sources up to 40mA. Bypass to GND with
a ceramic capacitor determined by:
C LDOOUT ≥ 0 . 5 ms X ?
?
?
?
14
15
12
13
LDOOUT
FBL
? I LDOOUT(MAX ) ?
V LDOOUT
Voltage Setting Input. Connect a resistive divider from the linear
regulator output (V LDOOUT ) to FBL to analog ground (GND).
Fault Trip-Level Set Input. Connect to a resistive divider between
16
16
14
14
FLTSET
REF and GND to set the main step-up converter’s and positive
charge pump’s fault thresholds between 0.67 x V REF and 0.85 x
V REF . Connect to GND for the preset fault threshold (0.9 x V REF ).
17
18
19
20
21
22
23
24
17
18
19
20
21
22
23
24
13–15
17
18
19
20
15, 16
17
18
19
20
11–13,
15, 16
SUPN
DRVN
SUPP
DRVP
PGND
LX
TGND
RDY
N.C.
Negative Charge-Pump Driver Supply Voltage. Bypass to power
ground (PGND) with a 0.1μF capacitor.
Negative Charge-Pump Driver Output. Output high level is V SUPN
and low level is PGND.
Positive Charge-Pump Driver Supply Voltage. Bypass to power
ground (PGND) with a 0.1μF capacitor.
Positive Charge-Pump Driver Output. Output high level is V SUPP
and low level is PGND
Power Ground. Connect to analog ground (GND) underneath the
IC.
Main Step-Up Regulator Power MOSFET N-Channel Drain. Place
output diode and output capacitor as close as possible to PGND.
Must be connected to ground.
Active-Low, Open-Drain Output. Indicates all outputs are ready.
On-resistance is 125 ? (typ).
No Connection. Not internally connected.
18
Maxim Integrated
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