ADM8839 Analog Devices, ADM8839 Datasheet - Page 6

• Manufacturer Part Number: ADM8839
• Description: Charge Pump Regulator for Color TFT Panel
• Manufacturer: Analog Devices

Specifications of ADM8839

• Peak Efficiency (%): 82%
• Switching Freq: 100kHz
• Vin Max (v): 4.2V
• Vin Min (v): 2.7V
• Package: 20-Lead LFCSP
• Out Voltage (v): 5V; 15V; -15V
• Ripple Out (p-p): 10mV p-p; 50mV p-p; 50mV p-p

ADM8839
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 3. LDO O/P Voltage Variation over Temperature and Supply
5.020
5.015
5.010
5.005
5.000
4.995
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
4.70
100
90
80
70
60
50
40
30
2
1
Figure 5. +15 V/−15 V Power Efficiency vs. Load Current
0
7 .
0
Figure 4. LDO O/P Voltage vs. Load Current
20
2.9
1
DEVICE AT +25°C
30
DEVICE AT –40°C
3.1
2
40
SUPPLY VOLTAGE (V)
3.3
3
I
LOAD
5
I
LOAD
0
(µA)
4
3
(mA)
5 .
60
5
7
3.7
0
DEVICE AT +85°C
80
6
3
9 .
9
0
7
4.1 4.2
1
0
0
8
Rev. C | Page 6 of 12
Figure 8. +15 V/−15 V Output Voltage vs. Load Current, Typical Configuration
15.1
15.0
14.9
14.8
14.7
14.6
14.5
14.4
14.3
14.2
14.1
400
350
300
250
200
150
84
83
82
81
80
79
78
77
76
75
Figure 6. LDO Power Efficiency vs. Load Current, V
2
1
7 .
0
Figure 7. Supply Current vs. Supply Voltage
2.9
2
50
3.1
3
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
3.3
I
LOAD
4
–15V AT 25°C
100
3
(µA)
5 .
5
+15V AT 25°C
3.7
6
150
3
9 .
CC
7
= 3 V
4.1 4.2
200
8