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부품번호 | AP2502 기능 |
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기능 | 4-CH Linear Constant Current Sink | ||
제조업체 | BCD | ||
로고 | |||
전체 12 페이지수
Data Sheet
4-CH Linear Constant Current Sink With Matching
AP2502
General Description
The AP2502 is a 4-channel independent linear
current sink with low dropout voltage and perfect
match between each channel. Each channel can
provide 20mA continuous constant current.
In application, there is only one 0.1µF ceramic
capacitor required, and there is no any EMI and
switching noise issue. It is perfect choice for
hand-hold portable system especially based on
Li-ion/Polymer battery powered display module.
The brightness can be controlled and/or adjustable
via simple PWM signal applied to EN pin.
The AP2502 is available with SOT-23-6 and
TSOT-23-6 packages.
Features
• Current Matching Between Each Channel: ±1%
• Low Dropout Voltage: 65mV (Typ.) @ ILED=
20mA
• Maximum Output Current on Each Channel:
20mA
• Ultra-low Quiescent Current: 125µA (Typ.)
• Ultra-low Shutdown Current: 1µA (Max.)
• None EMI and Switching Noise Issue
• Permitted PWM Dimming Frequency up to
• 150kHz
• OTSD Protection
Applications
• Mobile Phone, Smart Phone, PDA
• MP3, MP4, PMP
• Small Size Backlight Module
SOT-23-6
TSOT-23-6
Figure 1. Package Types of AP2502
Oct. 2010 Rev 1. 1
BCD Semiconductor Manufacturing Limited
1
4-CH Linear Constant Current Sink With Matching
Ordering Information
AP2502
-
Data Sheet
AP2502
Circuit Type
G1: Green
Package
K: SOT-23-6
KT: TSOT-23-6
TR: Tape & Reel
Package
SOT-23-6
TSOT-23-6
Temperature
Range
-40 to 85°C
-40 to 85°C
Part Number
AP2502KTR-G1
AP2502KTTR-G1
Marking ID
GEE
L7E
Packing
Type
Tape & Reel
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and Green.
Absolute Maximum Ratings (Note 1)
Parameter
Enable Input Voltage
Thermal Resistance (Junction to Ambient)
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering,10 seconds)
ESD (Machine Model)
ESD (Human Body Model)
Symbol
VEN
θJA
TJ
TSTG
TLEAD
Value
-0.3 to 6.5
250
150
-65 to 150
260
600
6000
Unit
V
ºC/W
ºC
ºC
ºC
V
V
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Oct. 2010 Rev 1. 1
BCD Semiconductor Manufacturing Limited
4
4페이지 4-CH Linear Constant Current Sink With Matching
Typical Performance Characteristics (Continued)
Data Sheet
AP2502
120
110
100
90
80
70
60
50
40
30
20
-40
-20
0
20 40 60 80 100 120 140
Case Temperature (oC)
Figure 8. Dropout Voltage vs. Case Temperature
1.0
0.8
V =3V
0.6 EN
V =300mV
LED
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-40 -20 0 20 40 60 80 100 120 140
Case Temperature (oC)
Figure 9. Current Matching vs. Case Temperature
24.0
23.5
23.0
22.5
22.0
21.5
21.0
20.5
20.0
19.5
19.0
18.5
18.0
17.5 V =300mV
LED
17.0 T =25oC
16.5
C
16.0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Enable Voltage (V)
Figure 10. LED Current vs. Enable Voltage
110
100
90
80
70
60
50
40
30
20
10
0
-10
0
f=100Hz
f=10kHz
f=100kHz
f=150kHz
T =25oC
C
10 20 30 40 50 60 70 80 90 99
Duty Cycle (%)
Figure 11. LED Current Efficiency vs. Duty Cycle
Oct. 2010 Rev 1. 1
BCD Semiconductor Manufacturing Limited
7
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |