Datasheet
Power Supply IC Series for TFT-LCD Panels
Multi-channel
System Power Supply IC + Gamma Buffer
BD8162AEKV
General Description
The BD8162AEKV is a system power supply IC that
provides control 6 power supply channels and 4 gamma
output channels + VCOM required for TFT-LCD panels on
a single chip. All channels have built-in control input and
Power-Good output functions, enabling free sequence
control setting just by changing channels. In addition, the
BD8162AEKV is a user-friendly IC incorporating input
switch, short-circuit protection, and protection detection
output circuits.
Key Specifications
Power Supply Voltage 1 Range:
4.2V to 14V
Oscillating Frequency: 200kHz to 800kHz(Variable)
Operating Temperature Range:
-40°C to +105°C
Package
W(Typ) x D(Typ) x H(Max)
Features
Step-up DC/DC Converter with Built-in 3A FET
Step-down DC/DC Converter with Built-in 2A FET
Synchronous Rectification Step-down DC/DC
Converter with Built-in 2A FET
3ch LDO Regulator (500mA, 200mA, 20mA)
Positive/Negative Charge Pumps
4ch Gamma Buffer Amplifier + VCOM
Protection Circuits:
Under-Voltage Lockout Protection Circuit
Thermal Shutdown Circuit
Timer Latch Type Short-Circuit Protection Circuit
Controllable Startup Sequence
HTQFP64V
12.00mm x 12.00mm x 1.00mm
Applications
LCD TV power supplies
○Product
structure：Silicon monolithic integrated circuit
○This
product has no designed protection against radioactive rays
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BD8162AEKV
Typical Application Circuit (1)
1. Application used to input V
CC
12V:
BD8162AEKV
Figure 1. Typical 12V Input Application Diagram
2. Startup Sequence
VCC input
VDD3
(Sync rectification)
VDD1
(Step-down)
VDD2
(LDO2)
AVCC
(Step-up)
VOL
(Negative charge pump)
LDO3
VOH
(Positive charge pump)
AMP+VCOM
3. Sequence Image Chart
V
CC
(12V)
AVCC
VOH
LDO3
AMP
+
VCOM
VDD3
VDD1
VDD2
VOL
Figure 2. Sequence Chart
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BD8162AEKV
Typical Application Circuit (2)
1. Application used to input 5V:
BD8162AEKV
Figure 3. Typical 5V Input Application Circuit Diagram
2. Startup Sequence
VCC input
VDD3
(Sync rectification)
VDD1
(LDO1)
VDD2
(LDO2)
AVCC
(Step-up)
VOL
(Negative charge pump)
LDO3
VOH
(Positive charge pump)
AMP+VCOM
3. Sequence Image Chart
AVCC
VOH
V
CC
(5V)
VDD3
VDD1
VDD2
LDO3
AMP
+
VCOM
VOL
Figure 4. Sequence Chart
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BD8162AEKV
Absolute Maximum Ratings
(Ta=25°C)
Parameter
Power Supply Voltage 1
Power Supply Voltage 2
Power Supply Voltage 3
SW1 Pin Voltage
Maximum Junction Temperature
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Symbol
V
CC
, V
PVCC2, 3
V
LDVCC2
V
HVCC
V
SW1
Tjmax
Pd
Topr
Tstg
Rating
15
7
20
20
150
5.20
(Note 1)
-40 to +105
-55 to +150
Unit
V
V
V
V
°C
W
°C
°C
(Note 1) To use the IC at temperatures over Ta½25°C, derate power rating by 41.6mW/°C.
When mounted on a four-layer glass epoxy board measuring 70 mm x 70 mm x 1.6 mm (with reverse side of copper foil measuring 70mm x 70 mm).
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Recommended Operating Conditions
(Ta½-40°C to +105°C)
Parameter
Power Supply Voltage 1
Power Supply Voltage 2
Power Supply Voltage 3
SW1 Pin Voltage
SW1 Pin Current
SW2, 3 Pin Current
Fault Detection Pull-up Voltage
Power Good Pull-up Voltage
Switching Frequency
Symbol
V
CC
, V
PVCC2, 3
V
LDVCC2
V
HVCC
V
SW1
I
SW1
I
SW2,3
V
FAULT
V
PG
f
SW
Min
4.2
-
6
-
-
-
-
-
200
Max
14
5.5
18
18
3
2
5.5
5.5
800
Unit
V
V
V
V
A
A
V
V
kHz
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