产品特性- Up to 92% Efficiency
- High Output Voltage Range: up to 32V
- 1.3A Peak Input Current Limit:
ILEDup to 200 mA @ 5.0V VIN, 4 White LEDs
ILED up to 125 mA @ 3.3V VIN, 4 White LEDs
ILED up to 100 mA @ 4.2V VIN, 8 White LEDs
- ILEDup to 200 mA @ 5.0V VIN, 4 White LEDs
- ILED up to 125 mA @ 3.3V VIN, 4 White LEDs
- ILED up to 100 mA @ 4.2V VIN, 8 White LEDs
- Input Voltage Range: 2.4V to 5.5V
- Undervoltage Lockout (UVLO):
UVLO@VIN Rising: 2.3V, typical
UVLO@VIN Falling: 1.85, typical
- UVLO@VIN Rising: 2.3V, typical
- UVLO@VIN Falling: 1.85, typical
- No Load Input Current: 250 µA, typical
- Sleep mode with 200 nA Typical Quiescent Current
- PWM Operation with Skip mode: 500 kHz
- Feedback Voltage Reference: VFB= 300 mV
- Cycle-by-Cycle Current Limiting
- Internal Compensation
- Inrush Current Limiting and Internal Soft-Start
- Output Overvoltage Protection (OVP) in the event of:
Feedback Pin Shorted to GND (Prevent Excessive Current into LEDs)
Disconnected LED String (Prevent Overvoltage to the Converter’s Output and
SW Pin)
- Feedback Pin Shorted to GND (Prevent Excessive Current into LEDs)
- Disconnected LED String (Prevent Overvoltage to the Converter’s Output and
SW Pin)
- Overtemperature Protection
- Available Packages: 5-Lead SOT-23 or 2x3 8-Lead TDFN
| 技术参数|
Parameter Name
Value
| Value | |
Regulator Type
Step Up (Boost)
|
Step Up (Boost)
| |
Input Voltage Range Min (V)
2.4
|
2.4
| |
Input Voltage Range Max (V)
5.5
|
5.5
| |
Output Voltage Range Max (V)
32
|
32
| |
Quiescent Current (mA) typ
0.25
|
0.25
| |
Switching Frequency (kHz)
500
|
500
| |
Operating Temp Range
-40 to 125
|
-40 to 125
| |
Vfb (V)
0.3
|
0.3
| |
Duty Cycle Max (%)
90
|
90
| |
SHUTDOWN Current (µA) (Typ)
0.02
|
0.02
| |
Switch current (A) typ
1.3
|
1.3
|
|
