目录
产品概述 返回TOPwFP嘉泰姆
The CXLE8157 is a high efficiency charge pump white
LED driver; the device drives up to four white LEDs in the
main display and up to two white LEDs in the sub-display
with regulated constant current for uniform intensity. The
supply voltage ranges from 2.7V to 5.5V and it is optimized
for a Li-ion battery application. The CXLE8157 operates
in 1x, 1.5x, and 2x charge pump modes and automatically
switches the charge pump modes depend on
the input voltage to maintain the required power for high
power efficiency. The CXLE8157 provides up to 30mA per
LED and allows several methods such as the PWM signals
on the ENM pin for main-display dimming and on
the ENS pin for sub-display dimming. The two control
logic pins, ENM and ENS, allow disabling or enabling the
main and sub-displays. The supply current is only 2mA in
2x mode, and the ENM and ENS are kept low for 20ms
will allow the device to enter shutdown mode with 2mA
quiescent current. The CXLE8157 features current limit
and short circuit protection. The CXLE8157 switches at
1MHz frequency and only requires four 1mF ceramic capacitors
and one resistor, and ensures low input current
ripple and EMI. The CXLE8157 is available in a 16-pin
QFN package.
产品特点 返回TOPwFP嘉泰姆
· ±1.5% LED Current Matching wFP嘉泰姆
· Powers Main and Sub-Display LEDs wFP嘉泰姆
· High Efficiency Up to 90% Over Li-ion Battery
Discharge wFP嘉泰姆
· Output Current Up to 30mA per LED wFP嘉泰姆
· 2.7V to 5.5V Operating Voltage wFP嘉泰姆
· 1x/1.5x/2x Charge Pump Modes wFP嘉泰姆
· Low Shutdown Current: 2mA Maximum wFP嘉泰姆
· Low Input Ripple and EMI wFP嘉泰姆
· Internal Soft-Start Limits Inrush Current wFP嘉泰姆
· Short Circuit Current Limit wFP嘉泰姆
· Thermal Shutdown Protection wFP嘉泰姆
· Output Over-Voltage Protection wFP嘉泰姆
· 16-pin QFN Package wFP嘉泰姆
· Lead Free and Green Devices Available
(RoHS Compliant)wFP嘉泰姆
应用范围 返回TOPwFP嘉泰姆
· Cellular Phone White LED Back Light wFP嘉泰姆
· Portable Device wFP嘉泰姆
· PDA, Handheld Computer wFP嘉泰姆
· DSCwFP嘉泰姆
技术规格书（产品PDF) 返回TOP wFP嘉泰姆
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持</span>！</span>
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产品封装图 返回TOPwFP嘉泰姆
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电路原理图 返回TOPwFP嘉泰姆
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Lighting and Display Product > White LED DriverwFP嘉泰姆 |
Part_No wFP嘉泰姆 | Topology wFP嘉泰姆 | ArchiwFP嘉泰姆 tecture wFP嘉泰姆 | Input wFP嘉泰姆 VoltagewFP嘉泰姆 (V) wFP嘉泰姆 | Adj.wFP嘉泰姆 Output wFP嘉泰姆 Voltage V wFP嘉泰姆 | No. wFP嘉泰姆 of wFP嘉泰姆 LEDs wFP嘉泰姆 | LEDwFP嘉泰姆 Current wFP嘉泰姆 (Max)wFP嘉泰姆 (A) wFP嘉泰姆 | Switch Current Limit (A) wFP嘉泰姆 | Current Sense Voltage (typ)(V) wFP嘉泰姆 | Switching Frequency (kHz) wFP嘉泰姆 | Dimming Control wFP嘉泰姆 | Package wFP嘉泰姆 |
minwFP嘉泰姆 | maxwFP嘉泰姆 | maxwFP嘉泰姆 |
CXLE8153wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.7wFP嘉泰姆 | 6wFP嘉泰姆 | 32wFP嘉泰姆 | 8wFP嘉泰姆 | 0.03wFP嘉泰姆 | 0.9wFP嘉泰姆 | 0.25wFP嘉泰姆 | 1000wFP嘉泰姆 | AnalogwFP嘉泰姆 | SOT23-6wFP嘉泰姆 |
CXLE8154wFP嘉泰姆 | BoostwFP嘉泰姆 | VM wFP嘉泰姆 | 2.5wFP嘉泰姆 | 6wFP嘉泰姆 | 19wFP嘉泰姆 | 4wFP嘉泰姆 | 0.03wFP嘉泰姆 | 0.4wFP嘉泰姆 | 0.25wFP嘉泰姆 | 1000wFP嘉泰姆 | Analog PWM wFP嘉泰姆 | SOT23-6wFP嘉泰姆 |
CXLE8155wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.7wFP嘉泰姆 | 21wFP嘉泰姆 | 30wFP嘉泰姆 | 8wFP嘉泰姆 | 0.6wFP嘉泰姆 | 3.5wFP嘉泰姆 | 0.5wFP嘉泰姆 | 1200wFP嘉泰姆 | AnalogwFP嘉泰姆 | DFN3x3-10wFP嘉泰姆 |
CXLE8156wFP嘉泰姆 | Charge wFP嘉泰姆 PumpwFP嘉泰姆 | -wFP嘉泰姆 | 2.8wFP嘉泰姆 | 4.5wFP嘉泰姆 | -wFP嘉泰姆 | 4wFP嘉泰姆 | 0.03wFP嘉泰姆 | -wFP嘉泰姆 | -wFP嘉泰姆 | 1000wFP嘉泰姆 | Analog PWM wFP嘉泰姆 DigitalwFP嘉泰姆 | QFN4x4-16wFP嘉泰姆 |
CXLE8157wFP嘉泰姆 | Charge wFP嘉泰姆 PumpwFP嘉泰姆 | -wFP嘉泰姆 | 2.8wFP嘉泰姆 | 4.5wFP嘉泰姆 | -wFP嘉泰姆 | 6wFP嘉泰姆 | 0.03wFP嘉泰姆 | -wFP嘉泰姆 | -wFP嘉泰姆 | 1000wFP嘉泰姆 | Analog PWM DigitalwFP嘉泰姆 | QFN4x4-16wFP嘉泰姆 |
CXLE8158wFP嘉泰姆 | Charge wFP嘉泰姆 PumpwFP嘉泰姆 | -wFP嘉泰姆 | 2.8wFP嘉泰姆 | 4.5wFP嘉泰姆 | -wFP嘉泰姆 | 4wFP嘉泰姆 | 0.03wFP嘉泰姆 | -wFP嘉泰姆 | -wFP嘉泰姆 | 1000wFP嘉泰姆 | Analog PWM DigitalwFP嘉泰姆 | QFN3x3-16wFP嘉泰姆 |
CXLE8159wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.5wFP嘉泰姆 | 6wFP嘉泰姆 | 24wFP嘉泰姆 | 6wFP嘉泰姆 | 0.03wFP嘉泰姆 | 1.2wFP嘉泰姆 | 0.1wFP嘉泰姆 | 1000wFP嘉泰姆 | Analog PWM wFP嘉泰姆 | SOT23-6wFP嘉泰姆 |
CXLE8160wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.5wFP嘉泰姆 | 6wFP嘉泰姆 | 39wFP嘉泰姆 | 10wFP嘉泰姆 | 0.03wFP嘉泰姆 | 0.9wFP嘉泰姆 | 0.3wFP嘉泰姆 | 1000wFP嘉泰姆 | Analog PWM wFP嘉泰姆 | SOT23-6wFP嘉泰姆 |
CXLE8161wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.5wFP嘉泰姆 | 6wFP嘉泰姆 | 24wFP嘉泰姆 | 6wFP嘉泰姆 | 0.03wFP嘉泰姆 | 1.2wFP嘉泰姆 | 0.2wFP嘉泰姆 | 1000wFP嘉泰姆 | Analog PWMwFP嘉泰姆 | SOT23-6wFP嘉泰姆 |
CXLE8162wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.5wFP嘉泰姆 | 6wFP嘉泰姆 | 40wFP嘉泰姆 | 10wFP嘉泰姆 | 0.03wFP嘉泰姆 | 1.5wFP嘉泰姆 | 0.2wFP嘉泰姆 | 600wFP嘉泰姆 | Analog PWMwFP嘉泰姆 | TDFN2x2-6wFP嘉泰姆 |
CXLE8163wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.5wFP嘉泰姆 | 6wFP嘉泰姆 | 24wFP嘉泰姆 | 6wFP嘉泰姆 | 0.03wFP嘉泰姆 | 2wFP嘉泰姆 | 0.2wFP嘉泰姆 | 1500wFP嘉泰姆 | Analog PWMwFP嘉泰姆 | SOT23-6wFP嘉泰姆 |
CXLE8164wFP嘉泰姆 | BuckwFP嘉泰姆 | CMwFP嘉泰姆 | 3wFP嘉泰姆 | 5.5wFP嘉泰姆 | -wFP嘉泰姆 |
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| SOT23-5wFP嘉泰姆 |
CXLE8165wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 6wFP嘉泰姆 | 24wFP嘉泰姆 | 65wFP嘉泰姆 | 17wFP嘉泰姆 | 0.18per stringwFP嘉泰姆 | 3.3wFP嘉泰姆 | 0.5wFP嘉泰姆 | 200 ~ 900wFP嘉泰姆 | External PWM Dimming/I2CwFP嘉泰姆 | TDFN5x5-16wFP嘉泰姆 |
CXLE8166wFP嘉泰姆 | BoostwFP嘉泰姆 | CMwFP嘉泰姆 | 2.7wFP嘉泰姆 | 6wFP嘉泰姆 | 40wFP嘉泰姆 | 10wFP嘉泰姆 | 0.03wFP嘉泰姆 | 1.5wFP嘉泰姆 | 0.2wFP嘉泰姆 | 600wFP嘉泰姆 | Analog PWMwFP嘉泰姆 | TDFN2x2-6wFP嘉泰姆 |
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