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参数资料
| 型号： | YB1313QF33 |
| 厂商： | YOBON TECHNOLOGIES, INC. |
| 英文描述： | 1x/1.5x/2x Charge Pump for White LED Application |
| 中文描述： | 1x/1.5x/2x充电泵白光LED应用 |
| 文件页数： | 1/9页 |
| 文件大小： | 641K |
| 代理商： | YB1313QF33 |
YB1313
1x/1.5x/2x Charge Pump for White LED Application
YB1313 MRev.1.1
www.yobon.com.tw
1
Description
The YB1313 charge pump is designed to drive
up to 5 white LEDs with regulated constant
current in back lit display application. The
device can provide up to 25 mA per LED for a
total of more than 125 mA. The input voltage
ranges from 2.7V to 5.5V and is ideal for
applications powered by a single LI-Ion or 3 to
4 NiCd, NiMH or Alkaline batteries.
The 1MHz fix-frequency switching allows for
tiny external components, and the regulation
scheme is optimized to ensure low EMI and
low input ripple.
Internal soft-start circuitry effectively reduces
the in-rush current. YB1313 also provides short
circuit protection, over-temperature protection
and over-voltage protection. In shutdown mode,
the shutdown current is less than 1μA. YB1313
is available in a TQFN-16 3x3 package.
Typical Application Circuit
Features
Input Range : 2.7V to 5.5V
Drives up to 5 LEDs at 25mA Each
1MHz Internal Oscillator
Thermal Protection Shutdown
Output Short-circuit Current Limit and
Over-voltage Protection
Under-Voltage Lockout With Hysteresis
Automatic Soft-Start Reduces In-Rush
Current
Three Charge Pump Mode：1x/1.5x/2x
3mm x 3mm TQFN package
Applications
White LED Backlighting
Handheld PCs and PDAs
Mobile Phone
VIN
C1+
C1-
C2+
C2-
EN1
EN2
GND
VOUT
D1
D2
D3
D4
D5
ISET
PGND
0. 47 F
1 F
VIN = 2.7V
To5.5V
YB 1313
2.2uF
Figure 1. Typical application circuit
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