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SP6645

Features: 90mA Output Current at 1.3V Input 190mA Output Current at 2.6V Input +2V to +5.5V Output Range 0.88V Guaranteed Start-Up 92% High Efficiency 1.6µA Quiescent Supply Current at VBATT Reverse Battery Protection Internal Synchronous Rectifier 5nA Logic Controlled Shutdown Current From...

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SeekIC No. : 004500571 Detail

SP6645: Features: 90mA Output Current at 1.3V Input 190mA Output Current at 2.6V Input +2V to +5.5V Output Range 0.88V Guaranteed Start-Up 92% High Efficiency 1.6µA Quiescent Supply Current at VBATT ...

SP6645 Data Sheet

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Part Number:
SP6645
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/24

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Product Details

Description



Features:

90mA Output Current at 1.3V Input
190mA Output Current at 2.6V Input
+2V to +5.5V Output Range
0.88V Guaranteed Start-Up
92% High Efficiency
1.6µA Quiescent Supply Current at VBATT
Reverse Battery Protection
Internal Synchronous Rectifier
5nA Logic Controlled Shutdown Current From VBATT
Low-Battery Detection Active LOW Output
Small 8 Pin MSOP Package
Flexibility to Optimize Inductor Type with Programmable Peak Current Control
No External FETs


Pinout

Connection Diagram


Specifications

VBATT to GND.......................................................-0.3 to 6.0V
VOUT to GND........................................................-0.3 to 6.0V
LX, SHDN, FB, BATTLO, to GND............................-0.3 to 6.0V
Reverse battery Current, TAMB=+25°C.......................220mA
(NOTE 1)
VBATT forward current......................................................0.5A
VOUT, LX current................................................................1A
Storage Temperature Range......................-65°C to +165°C
Lead Temperature (soldering 10s)............................+300°C
Operating Temperature.................................-40°C to +85°C
Power Dissipation Per Package
8-pin µSOIC (derate 4.85mW/OC above +70OC)..........390mW


Description

The SP6644/6645 devices are high-efficiency, low-power step-up DC-DC converters ideal for single or dual alkaline cell applications such as pagers, remote controls, pointing devices, medical monitors, and other low-power portable end products. Designers can control the SP6644 device with an active LOW shutdown input. The SP6644 device features an active low output for batteries below +1.0V. The SP6645 device features an active low output for batteries below +2.0V. Both devices contain a 0.8 synchronous rectifier, a 0.5 N-channel MOSFET power switch, an internal voltage reference, circuitry for pulsefrequency- modulation, and an under voltage comparator. The output voltage for the SP6644/6645 devices is preset to +3.3V + 4% or can be adjusted from +2V to +5.5V by manipulating two external resistors




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