中文
EnglishThe APW7071 is a high frequency step-up DC/DC con- verter in a small 6-lead SOT-23 package specially designed to drive white LEDs with a constant current. The device can drive up to 4 LEDs in serie
Features
2.5 V to 6V Input Voltage Range
400mA Internal Switch Current
Up to 1MHz Switching Frequency
70µA Typical No Load Quiescent Current
0.1µA Typical Shutdown Current
Internal Soft-Start
Up to 87% Efficiency
Operating Output Capacitor Down to 0.1µF
Over Voltage Protection Included
Lead Free and Green Devices Available
General Description
The APW7071 is a high frequency step-up DC/DC con-
verter in a small 6-lead SOT-23 package specially designed
to drive white LEDs with a constant current. The device
can drive up to 4 LEDs in series from one Li-Ion cell. The
APW7071 is ideal for LCD panels requiring low current
and high efficiency as well as white LED applications for
cellular phone back-lighting.
itch Current Limit (A) | Current Sense Voltage (typ)(V) | Switching Frequency (kHz) | Load Disconnect During Shutdown | Dimming Control | |||||||||||
min | max | min | max | ||||||||||||
APW7136 | SOT-23-6 | Boost | CM | 2.7 | 6 | 32 | 8 | 0.03 | 0.9 | 0.25 | 1000 | No | Analog | ||
APW7071 | SOT-23-6 | Boost | VM Hysteresis | 2.5 | 6 | 19 | 4 | 0.03 | 0.4 | 0.25 | 1000 | No | Analog | ||
APW7128 | DFN3x3-10 | Boost | CM | 2.7 | 21 | 30 | 8 | 0.6 | 3.5 | 0.5 | 1200 | No | Analog | ||
APW7000 | QFN4x4-16 | Charge Pump | - | 2.8 | 4.5 | - | 4 | 0.03 | - | - | 1000 | - | Analog | ||
APW7001 | QFN4x4-16 | Charge Pump | - | 2.8 | 4.5 | - | 6 | 0.03 | - | - | 1000 | - | Analog | ||
APW7008 | QFN3x3-16 | Charge Pump | - | 2.8 | 4.5 | - | 4 | 0.03 | - | - | 1000 | - | Analog | ||
APW7208 | SOT-23-6 | Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 1.2 | 0.1 | 1000 | No | Analog | ||
APW7209 | SOT-23-6 | Boost | CM | 2.5 | 6 | 39 | 10 | 0.03 | 0.9 | 0.3 | 1000 | No | Analog | ||
APW7207 | SOT-23-6 | Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 1.2 | 0.2 | 1000 | No | Analog | ||
APW7215 | TDFN2x2-6 | Boost | CM | 2.5 | 6 | 40 | 10 | 0.03 | 1.5 | 0.2 | 600 | No | Analog | ||
APW7236 | SOT-23-6 | Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 2 | 0.2 | 1500 | No | Analog |
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