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FAN5631

Features: 90% Peak Efficiency Low EMI Low Ripple Selectable Output Voltage 1.2V/1.5V for FAN5631 Efficiency Optimizer Feature for FAN5632 Input Voltage Range: 2.2V to 5.5V Output Current: Up to 250mA ±5% Output Voltage Accuracy 30µA Operating Current ICC < 1µA in Shutdown Mode 1.7M...

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SeekIC No. : 004340434 Detail

FAN5631: Features: 90% Peak Efficiency Low EMI Low Ripple Selectable Output Voltage 1.2V/1.5V for FAN5631 Efficiency Optimizer Feature for FAN5632 Input Voltage Range: 2.2V to 5.5V Output Current: Up to 250...

FAN5631 Data Sheet

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Part Number:
FAN5631
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: 2024/11/20

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Product Details

Description



Features:

90% Peak Efficiency
Low EMI
Low Ripple
Selectable Output Voltage 1.2V/1.5V for FAN5631
Efficiency Optimizer Feature for FAN5632
Input Voltage Range: 2.2V to 5.5V
Output Current: Up to 250mA
±5% Output Voltage Accuracy
30µA Operating Current
ICC < 1µA in Shutdown Mode
1.7MHz Operating Frequency
Shutdown Isolates Output from Input
Soft-Start Limits In-Rush Current
Short Circuit and Over Temperature Protection
Minimum External Component Count
Available in a 3x3mm 10-Lead MLP Package


Application

·Cell Phones
·Handheld Computers
·Portable Electronic Equipment
·Core Supply to Next Generation Processors
·Low Voltage DC Bus
·Digital Cameras
·DSP Supplies


Pinout

Connection Diagram


Specifications

Parameter Min Max Unit
VIN to GND -0.3 6 V
All other pins to GND -0.3 VIN + 0.3V V
Load Current   0.5 A
Thermal Resistance-Junction to Tab (JC), 3mmx3mm 10-lead MLP (Note 2)   8 °C/W
Lead Soldering Temperature (10 seconds)   260 °C
Storage Temperature -65 150 °C
Junction Temperature -40 150 °C
Electrostatic Discharge (ESD) Protection Level (Note 3) HBM 2.5   kV
CDM 2  



Description

The FAN5631/FAN5632 is an advanced, third-generation switched capacitor step-down DC/DC converter utilizing Fairchild's proprietary ScalarPump™ technology. This innovative architecture utilizes scalar switch re-configuration and fractional switching techniques to produce low output ripple, lower ESR spikes, and improve efficiency over a wide load range.

The FAN5631/FAN5632 produces a fixed regulated output voltage from an input voltage of 2.2V to 5V. Customized output voltages are available in 100mV increments from 1V to 1.8V.

Contact a Fairchild sales representative for customized output voltage options.

In order to maximize efficiency, the FAN5631/5632 achieves regulation by skipping pulses. Depending upon load current, the size of the switches are scaled dynamically; consequently, current spikes and EMI are minimized. An internal soft-start circuitry prevents excessive current drawn from the supply. The device is internally protected against short circuit and over temperature conditions.

The FAN5631 has a dual output voltage feature. When VSEL is high, VOUT is 1.5V and when VSEL is low, VOUT is 1.2V. Other output voltage options are available upon request.

In addition, the FAN5632 has an efficiency optimizer feature that, when enabled, changes the switch mode configuration from 2:1 to 1:1 at the lower threshold of VIN.

The efficiency is then maintained at its peak level over a wider range of input voltages. In addition, VOUT will vary between 1.2V to 1.5V as a result of this efficiency optimization. If the efficiency optimizer is not enabled, VOUT is regulated to 1.5V.

Both the FAN5631 and FAN5632 are available in a 3x3mm 10-lead MLP package.




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