ADM8839ACP(RevA) 데이터 시트보기 (PDF) - Analog Devices
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ADM8839ACP Datasheet PDF : 8 Pages
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ADM8839
It is possible to configure the ADM8839 to supply up to 400 µA
on the ± 15 V outputs by changing its configuration slightly, as
shown in Figure 4.
VCC
ADM8839
C5, 2.2F
VOLTAGE
DOUBLER
OSCILLATOR
CONTROL
LOGIC
LDO_ON/OFF
TIMING
GENERATOR
LDO
VOLTAGE
REGULATOR
DOUBLE
VOLTAGE
TRIPLER
TRIPLE
SHDN
VOLTAGE
SHUTDOWN
INVERTER
CONTROL DISCHARGE
C1+
C1, 2.2F
C1–
VOUT
LDO_IN
CURRENT BOOST
CONFIGURATION
CONNECTION
C6, 2.2F
+5VOUT
+5VIN
C2+
+5V
C7, 2.2F
C2, 0.22F
C2–
C3+
C3– C3, 0.22F
+15VOUT
+15V
C8, 0.22F
C4+
C4, 0.22F
C4–
GND
–15VOUT
–15V
C9, 0.22F
Figure 4. Current Boost Configuration
The configuration in Figure 4 can supply up to 400 µA 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).
17.0
16.5
+15V AT 25؇C
16.0
–15V AT 25؇C
15.5
15.0
14.5
14.0
0
100
200
300
400
500
ILOAD – A
Figure 5. +15 V/–15 V Output Voltage vs. Load
Current, Current Boost Configuration
OUTLINE DIMENSIONS
20-Lead Leadframe Chip Scale Package [LFCSP]
4 ϫ 4 mm Body
(CP-20)
Dimensions shown in millimeters
4.0
BSC SQ
PIN 1
INDICATOR
TOP
VIEW
3.75
BSC SQ
12؇ MAX
1.00
0.90
0.80
SEATING
PLANE
0.50
BSC
1.00 MAX
0.65 NOM
0.05
0.02
0.00
0.20
REF
0.60
MAX
0.60
MAX
16
20
15
1
BOTTOM
VIEW
0.75
0.55
0.35
11
5
10
6
0.30
0.23
0.18
COPLANARITY
0.08
COMPLIANT TO JEDEC STANDARDS MO-220-VGGD-1
2.25
2.10 SQ
1.95
Revision History
2/03 – Data Sheet Changed from Rev. 0 to Rev. A
Changed SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
–8–
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