參數(shù)資料
型號: ADM8839
廠商: Analog Devices, Inc.
英文描述: Charge Pump Regulator for Color TFT Panels
中文描述: 電荷泵穩(wěn)壓器的彩色TFT面板
文件頁數(shù): 8/8頁
文件大小: 233K
代理商: ADM8839
C
P
–8–
ADM8839
It is possible to configure the ADM8839 to supply up to 400
μ
A
on the
±
15 V outputs by changing its configuration slightly, as
shown in Figure 4.
OSCILLATOR
CONTROL
LOGIC
TIMING
GENERATOR
SHUTDOWN
CONTROL
DISCHARGE
VOLTAGE
INVERTER
VOLTAGE
TRIPLER
TRIPLE
LDO
VOLTAGE
REGULATOR
VOLTAGE
DOUBLER
CURRENT BOOST
CONFIGURATION
CONNECTION
C1+
C1–
VOUT
LDO_IN
+5VOUT
+5VIN
C2+
C2–
C3+
C3–
+15VOUT
C4+
C4–
–15VOUT
–15V
+15V
+5V
GND
SHDN
V
CC
DOUBLE
C5, 2.2 F
C1, 2.2 F
C7, 2.2 F
C8, 0.22 F
C9, 0.22 F
C2, 0.22 F
C3, 0.22 F
C4, 0.22 F
ADM8839
C6, 2.2 F
LDO_ON/
OFF
Figure 4. Current Boost Configuration
The configuration in Figure 4 can supply up to 400
μ
A of current
on both the +15 V and the –15 V outputs. If the load on the
±
15 V does not draw any current, the voltage on the
±
15 V out-
puts can rise up to
±
16.5 V (see Figure 5). In this configuration,
VOUT (Pin 2) is connected to +5VIN (Pin 5).
14.0
14.5
15.0
15.5
16.0
16.5
17.0
0
100
200
300
400
500
I
LOAD
– A
O
+15V AT 25 C
–15V AT 25 C
Figure 5. +15 V/–15 V Output Voltage vs. Load
Current, Current Boost Configuration
OUTLINE DIMENSIONS
20-Lead Leadframe Chip Scale Package [LFCSP]
4 4 mm Body
(CP-20)
Dimensions shown in millimeters
1
20
5
6
11
16
15
BOTTOM
VIEW
10
2.25
2.10 SQ
1.95
0.75
0.55
0.35
0.30
0.23
0.18
0.50
BSC
12
MAX
0.20
REF
1.00 MAX
0.65 NOM
0.05
0.02
0.00
1.00
0.90
0.80
SEATING
PLANE
PIN 1
INDICATOR
TOP
3.75
BSC SQ
4.0
BSC SQ
COPLANARITY
0.08
COMPLIANT TO JEDEC STANDARDS MO-220-VGGD-1
0.60
MAX
0.60
MAX
Revision History
2/03 – Data Sheet Changed from Rev. 0 to Rev. A
Changed SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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