AAT3151B_08 ANALOGICTECH [Advanced Analogic Technologies], AAT3151B_08 Datasheet - Page 5

• Manufacturer Part Number: AAT3151B_08
• Description: High Efficiency 1X/1.5X Charge Pump For White LED Applications
• Manufacturer: ANALOGICTECH [Advanced Analogic Technologies]

Typical Characteristics
(200mA/div)
3151B.2008.02.1.1
3151B.2008.02.1.1
ChargePump
ChargePump
(500mV/div)
3151B Backlight Efficiency vs. Supply Voltage
20.4
20.2
20.0
19.8
19.6
19.4
19.2
19.0
100
(2V/div)
(2V/div)
90
80
70
60
50
40
30
-40
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
V
SINK
EN
CP
Channel 4
Channel 2
I
IN
Current Matching vs. Temperature
-20
Turn-On to 1.5X Mode
TM
TM
Supply Voltage (V)
0
(V
Temperature (° ° C)
IN
Channel 3
1mA
= 3.5V; 20mA Load)
Time (100µs/div)
20
High Efficiency 1X/1.5X Charge Pump For White LED Applications
High Efficiency 1X/1.5X Charge Pump For White LED Applications
40
10.2mA
Channel 1
20mA
60
80
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
(200mA/div)
(100mA/div)
(500mV/div)
(2V/div)
(2V/div)
(2V/div)
(1V/div)
V
SINK
EN
CP
EN
V
I
I
IN
IN
F
PRODUCT DATASHEET
PRODUCT DATASHEET
Turn-Off from 1.5X Mode
Turn-On to 1X Mode
(V
(V
IN
IN
AAT3151B
AAT3151B
= 4.2V; 20mA Load)
= 3.5V; 20mA Load)
Time (500µs/div)
Time (100µs/div)
5
5