ADM8845ACPZ-REEL7 Analog Devices Inc, ADM8845ACPZ-REEL7 Datasheet - Page 8
![IC, WHITE LED DRIVER CHARGE PUMP LFCSP16](/photos/6/50/65061/505-16-lfcsp_sml.jpg)
ADM8845ACPZ-REEL7
Manufacturer Part Number
ADM8845ACPZ-REEL7
Description
IC, WHITE LED DRIVER CHARGE PUMP LFCSP16
Manufacturer
Analog Devices Inc
Type
Backlight, White LEDr
Datasheet
1.ADM8845ACPZ-REEL7.pdf
(20 pages)
Specifications of ADM8845ACPZ-REEL7
Led Driver Application
Cellular Phones, White LED Backlighting
No. Of Outputs
1
Output Current
30mA
Output Voltage
4.81V
Input Voltage
2.6V To 5.5V
Topology
Charge Pump
Constant Current
Yes
Number Of Outputs
6
Internal Driver
Yes
Type - Primary
Backlight, Flash/Torch
Type - Secondary
White LED
Frequency
200kHz
Voltage - Supply
2.6 V ~ 5.5 V
Voltage - Output
4.81V
Mounting Type
Surface Mount
Package / Case
16-LFCSP
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
30mA
Internal Switch(s)
Yes
Efficiency
88%
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
ADM8845EB-EVALZ - BOARD EVALUATION FOR ADM8845
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
ADM8845ACPZ-REEL7
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ADM8845ACPZ-REEL7
Manufacturer:
BROADCOM
Quantity:
20
ADM8845
V
V
OUT
CC
Figure 16. Power Efficiency vs. Supply Voltage over Li-Ion Range,
Figure 17. Power Efficiency vs. Supply Voltage over Li-Ion Range,
90
85
80
75
70
65
60
55
50
45
40
90
85
80
75
70
65
60
55
50
45
40
1
2.8
2.8
2
CH1 20.0mV
2.9
2.9
Figure 15. 1× Mode Operating Waveforms
3.0
3.0
3.1
3.1
B
3.2
Four LEDS @ 15 mA/LED
3.2
W
Six LEDS @ 15 mA/LED
CH2
3.3
3.3
20.0mV
3.4
3.4
V
V
V
V
V
V
CC
CC
F
F
3.5
3.5
F
F
= 3.6V
= 3.2V
(V)
(V)
= 3.6V
= 3.2V
B
3.6
3.6
W
M 400ns CH1
3.7
3.7
3.8
3.8
3.9
3.9
V
V
V
F
F
F
V
V
V
F
F
F
= 3.8V
= 4.0V
= 4.3V
4.0
4.0
= 3.8V
= 4.0V
= 4.3V
4.1
4.1
220mV
4.2
4.2
Rev. C | Page 8 of 20
CTRL1/2
Figure 18. Power Efficiency vs. Supply Voltage over Li-Ion Range,
V
Figure 19. Power Efficiency vs. Supply Voltage over Li-Ion Range
OUT
90
85
80
75
70
65
60
55
50
45
40
90
85
80
75
70
65
60
55
50
45
40
2.8
1
2.8
2
CH1
2.9
2.9
2.00V
3.0
3.0
3.1
3.1
CH2 2.00V
3.2
Four LEDS @ 20 mA/LED
3.2
Six LEDS @ 20 mA/LED
Figure 20. TPC Delay
3.3
3.3
3.4
3.4
V
V
V
V
V
V
CC
CC
F
F
3.5
F
F
3.5
= 3.6V
= 3.2V
= 3.6V
= 3.2V
(V)
(V)
M10.0ms
3.6
3.6
: 44.0ms
@: –44.4ms
3.7
3.7
3.8
3.8
3.9
3.9
C2 FALL
200s
LOW SIGNAL
AMPLITUDE
V
V
V
V
V
V
CH2
F
F
F
F
F
F
4.0
4.0
= 3.8V
= 4.0V
= 4.3V
= 3.8V
= 4.0V
= 4.3V
4.1
4.1
4.36V
4.2
4.2