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Si9181

Features: ` Low 150-mV Dropout at 350-mA Load` Guaranteed 350-mA Output Current` 600-mA Peak Output Current Capability` Uses Low ESR Ceramic Output Capacitor` Fast Load and Line Transient Response` Only 100-V(rms) Noise With Noise BypassCapacitor` 1-A Maximum Shutdown Current` Built-in Short Circu...

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SeekIC No. : 004490919 Detail

Si9181: Features: ` Low 150-mV Dropout at 350-mA Load` Guaranteed 350-mA Output Current` 600-mA Peak Output Current Capability` Uses Low ESR Ceramic Output Capacitor` Fast Load and Line Transient Response` ...

Si9181 Data Sheet

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Part Number:
Si9181
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: 2025/12/26

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Product Details

Description



Features:

` Low 150-mV Dropout at 350-mA Load
` Guaranteed 350-mA Output Current
` 600-mA Peak Output Current Capability
` Uses Low ESR Ceramic Output Capacitor
` Fast Load and Line Transient Response
` Only 100-V(rms) Noise With Noise Bypass
Capacitor
` 1-A Maximum Shutdown Current
` Built-in Short Circuit and Thermal Protection
` Out-Of-Regulation Error Flag (Power Good or POR)
` Fixed 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 2.85-V, 2.9 V,
3.0-V, 3.3-V, 5.0-V, or Adjustable Output Voltage
Options
` Other Output Voltages Available by Special Order




Application

· Cellular Phones
· Laptop and Palm Computers
· PDA, Digital Still Cameras




Pinout

Connection Diagram




Specifications

Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
SDInput Voltage, VSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to VIN
Output Current, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . Short Circuit Protected
Output Voltage, VOUT . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to VO(nom) + 0.3 V
Maximum Junction Temperature, TJ(max) . . . . . . . . . . . . . . . . . . . . . . . 150C
Storage Temperature, TSTG . . . . . . . . . . . . . . . . . . . . . . . . . . −55 to 150
ESD (Human Body Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
Power Dissipation (Package)a
8-Pin TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 833 mW
Thermal Impedance (JA)
8-Pin TSSOPb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120/W
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 8.3 mW/above TA = 25




Description

The Si9181 is a 350-mA CMOS LDO (low dropout) voltage regulator. The device features ultra low ground current and dropout voltage to prolong battery life in portable electronics.

The Si9181 offers line/load transient response and ripple rejection superior to that of bipolar or BiCMOS LDO regulators.

The Si9181 is designed to maintain regulation while delivering 600-mA peak current. This is useful for systems that have high surge current upon turn-on. The Si9181 is designed to drive the lower cost ceramic, as well as tantalum, output capacitors.

The Si9181 is guaranteed stable from maximum load current down to 0-mA load. In addition, an external noise bypass capacitor connected to the device's CNOISE pin will lower the LDO's output noise for low noise applications.

The Si9181 also includes an out-of-regulation error flag. When the output voltage is 5% below its nominal output voltage, the error flag output goes low. If a capacitor is connected to the device's delay pin, the error flag output pin will generate a delayed power-on-reset signal.

The Si9181 is available in both standard and lead (Pb)-free packages.






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