LT1942EUF#PBF Linear Technology, LT1942EUF#PBF Datasheet - Page 12
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LT1942EUF#PBF
Manufacturer Part Number
LT1942EUF#PBF
Description
IC REG SW QUAD TFT LCD 24-QFN
Manufacturer
Linear Technology
Datasheet
1.LT1942EUFPBF.pdf
(16 pages)
Specifications of LT1942EUF#PBF
Applications
Converter, TFT
Voltage - Input
2.6 ~ 16 V
Number Of Outputs
4
Voltage - Output
1.25 ~ 36 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
24-QFN
Primary Input Voltage
16V
No. Of Outputs
4
Output Current
750mA
No. Of Pins
24
Operating Temperature Range
-40°C To +85°C
Msl
MSL 1 - Unlimited
Supply Voltage Range
2.6V To 16V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
APPLICATIO S I FOR ATIO
LT1942
12
U
SHUTDOWN
I
Q
U
< 1µA
10V/DIV
10V/DIV
10V/DIV
5V/DIV
5V/DIV
1V/DIV
V
V
AVDD
SHDN
START
V
Figure 2. Power Sequencing During TFT Supply Start-Up
(Refer to Figure 4 Node Names)
V
W
V
V
V
V
OFF
SHDN
ON
D3
C1
SHDN
AV
V
V
OFF
TFT SUPPLY
ON
SEQUENCE
COMPLETE
DD
> 1V
DISABLED
DISABLED
< 0.4V
ENABLED
Figure 1. Power Sequencing State Diagram
U
FB1 > (97% OF 1.25V)
2ms/DIV
OUTPUT DISCONNECT
PGOOD GOES LOW
PNP TURNS ON
1942 F02
CT TIMER STARTS
V
CT
≥ V
1942 F01
BE
V
V
OFF
ON
ENABLED
ENABLED
1942fb