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Si9150

Features: · 6- to 16.5-V Input Range (Si9150CY)· Voltage-Mode PWM Control· Low-Current Standby Mode· Enable Control· Dual 100-mA Output Drivers· 2% Band Gap Reference· Multiple Converters Easily Synchronized· Over-Current ProtectionPinoutSpecificationsVoltages Referenced to GND.VDD . . . . . . . ....

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SeekIC No. : 004490908 Detail

Si9150: Features: · 6- to 16.5-V Input Range (Si9150CY)· Voltage-Mode PWM Control· Low-Current Standby Mode· Enable Control· Dual 100-mA Output Drivers· 2% Band Gap Reference· Multiple Converters Easily Syn...

Si9150 Data Sheet

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Part Number:
Si9150
Supply Ability:
5000

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

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Product Details

Description



Features:

· 6- to 16.5-V Input Range (Si9150CY)
· Voltage-Mode PWM Control
· Low-Current Standby Mode
· Enable Control
· Dual 100-mA Output Drivers
· 2% Band Gap Reference
· Multiple Converters Easily Synchronized
· Over-Current Protection




Pinout

Connection Diagram




Specifications

Voltages Referenced to GND.
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
ISENSE Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −2 V to VDD +2 V
All Other Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to VDD + 0.3 V
P-Gate, N-Gate Continuous Source/Sink Current . . . . . . . . . . . . . . . . 50 mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 125
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Power Dissipation (Package)a
14-Pin SOIC (Y Suffix)b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW
Thermal Impedance (JA)
14-Pin SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140/W
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 7.2 mW/.




Description

The Si9150 synchronous buck regulator controller is ideally suited for high-efficiency step down converters in battery-powered equipment. Combined with the Si9943DY MOSFET half-bridge, a 90% efficient, 7.5-W, 3.3-V or 5-V power supply can be implemented using standard surfacemount assembly techniques. The wide input range allows operation from NiCd or NiMH battery packs using six to ten cells.

Over-current protection is achieved by sensing the on-state voltage drop across the high side p-channel MOSFET, which eliminates the need for a current sense resistor.

Duty ratios of 0 to 100% and switching frequencies up to 300 kHz are possible. The IC can be disabled by pulling EN low (IDD = 100 A), or the 2.5-V reference can be maintained, with all other functions disabled, by pulling STBY low (IDD = 500 A).

The Si9150 is available in both standard and lead (Pb)-free 14-pin SOIC and rated for the commercial temperature range of 0 to 70 (C suffix), and the industrial temperature range of −40 to +85 (D suffix).






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