Intersil TFT-LCD的DC/DC稳压器选型
【选型】Intersil 消费电子IC选型指南
选型目录：
移动计算电源管理解决方案
处理器核心电源
PMIC
电池充电器
交换式稳压器
消费电子LDO
显示和背光驱动器
消费电子LED背光驱动器
TFT-LCD的DC/DC稳压器
消费电子光传感器
消费电子IC设计工具和支持
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26
\ Consumer Electronics
TFT-LCD DC-DC Regulators
TFT-LCD DC-DC Regulators
ISL98608
High Effi ciency Power Supply
for Small Size Displays
The ISL98608 is a high effi ciency power supply for small
size displays, such as smart phones and tablets requiring
±supply rails. It integrates a boost regulator, LDO and
inverting charge pump that are used to generate two
output rails: +5.5V (default) and -5.5V (default). The ±5.5V
output voltages can be adjusted from ±4.5V up to ±7V with
50mV steps using the I
2
C interface.
• Two outputs:
–
V
P
= +5.5V (default)
–
V
N
= -5.5V (default)
• 2.5V to 5V input voltage range
•
±4.5 to ±7V wide output range
•
>89% effi ciency with 12mA load between V
P
and V
N
• 18mm
2
solution PCB area
•
Fully integrated FETs for synchronous rectifi cation
•
Integrated compensation and feedback circuits
•I
2
C adjustable output voltages and settings
C
IN
ISL98608
LXP
AGND
PGND
VIN
VBST
CP
VN
SCL
SDA
ENP
L1
-5.5V
NEGATI
VE
SUPPLY
CN
VIN
2.5V
TO 5V
POSITI
VE
SUPPLY
+5.5V
VP
ENN
VBSTCP
LCD PANEL
PROCESSOR
C
VBST
C
VN
C
CP
C
VP
VSUB
Ultra-small 1.744mm x1.744mm WLCSP package
www.renesas.com
Consumer Electronics /
27
Integrated TFT-LCD DC-DC Regulators
Device
V
IN
Range
(V)
Interface
Type
A
VDD
Range
(V)
Boost
Current
Limit (A)
V
ON
Range
(V)
V
OFF
Range
(V)
Package
Technical Highlights
ISL98602
9.5 to 15
N/A
1.14xV
IN
to
19
5.5
max 36
min -10
40 Ld QFN
5 Channel DC/DC
converter + V
ON
Slice +
Power Good. Ideal for
LCD TV
ISL98607
2.8 to 4.4 I
2
C
-5.7 to -5,
5 to 5.7
1.8
N/A
N/A
20 Ld WLCSP
Tiny package. Ideal for
smartphone and tablet
displays
ISL98608
2.5 to 5
I
2
C
-7 to -4.5,
4.5 to 7
1.8
N/A
N/A
16 Ld WLCSP
Tiny package. Ideal for
smartphone and tablet
displays
ISL98611/A
2.5 to 5
I
2
C
-6 to -4.5,
4.5 to 6
1.6
N/A
N/A
30 Ld WLCSP
Tiny package. Ideal for
smartphone and tablet
displays
ISL97645A
2.7 to 5.5 N/A
V
IN
x1.25 to
20
2.6
min 7
N/A
24 Ld QFN
Boost + V
ON
Slice + V
COM
+ Reset. Ideal for tablet,
notebook, monitor
and industrial/medical
displays
ISL97649AR5566
2.5 to 5.5 I
2
C
0 to 15
1.5
7 to 33
-10 to 0
28 Ld QFN
TFT-LCD supply + DCP
+ V
COM
amplifier + gate
pulse modulator +
RESET. Ideal for LCD
notebook, tablet, and
monitor
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