SI91872DMP-26-T1

Number of Outputs : 1
Mounting Style : SMD/SMT
Output Type : Fixed
Maximum Operating Temperature : + 85 C
Output Current : 300 mA
Load Regulation : 25 mV
Input Voltage MAX : 6 V
Dropout Voltage (Max) : 350 mV
Output Voltage : 2.6 V
Package / Case : PowerPAK-MLP33-5


Features:

Ultra Low Dropout-300 mV at 300-mA Load
Low Noise-75
VRMS (10-Hz to 100-kHz)
Out-of-Regulation Error Flag (power good)
Shutdown Control
130-
A Ground Current at 300-mA Load
 Fast Start-Up (50
S)
1.5% Guaranteed Output Voltage Accuracy
400-mA Peak Output Current Capability
Uses Low ESR Ceramic Capacitors
Fast Line and Load Transient Response (
30
s)
1-
A Maximum Shutdown Current
Output Current Limit
Reverse Battery Protection
Built-in Short Circuit and Thermal Protection Output-Auto-Discharge In Shutdown Mode
 Fixed 1.2, 1.8, 2.5, 2.6, 2.8, 3.0, 3.3, 5.0-V OutputVoltage Options
 MLP33-5 PowerPAK Package

Application

Cellular Phones, Wireless Handsets

Noise-Sensitive Electronic Systems, Laptop and Palmtop Computers

PDAs
 Pagers
 Digital Cameras
MP3 Player
Wireless Modem

Pinout




Specifications

Absolute Maximum Ratings
Input Voltage, V_IN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −6.0 to 6.5 V
ERROR, SD (See Detailed Description). . . . . . . . . . . . . . . . .   −0.3 V to VIN
Output Current, I_OUT . . . . . . . . . . . . . . . . . . . . . . . . . .Short Circuit Protected
Output Voltage, V_OUT  . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.3 V to VIN + 0.3 V
Package Power Dissipation, (Pd)^b  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3 W
Thermal Resistance (JA)^a  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55/W
                              R(JA)^a  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8/W
Maximum Junction Temperature, TJ(_max) . . . . . . . . . . . . . . . . . . . . . . 150
Storage Temperature, TSTG   . . . . . . . . . . . . . . . . . . . . . . . . . .−65 to150



Description

  The Si91872 is a 300-mA CMOS LDO (low dropout) voltage regulator. It is the perfect choice for low voltage, low power applications. An ultra low ground current and ultra fast turn-on make this part attractive for battery operated power systems.

  The Si91872 also offers ultra low dropout voltage to prolong battery life in portable electronics. Systems requiring a quiet voltage source will benefit from the Si91872's low output noise.

  The Si91872 is designed to maintain regulation while delivering 400-mA peak current, making it ideal for systems that have a high surge current upon turn-on.

   For better transient response and regulation, an active pull-down circuit is built into the Si91872 to clamp the output voltage when it rises beyond normal regulation. The Si91872 automatically discharges the output voltage by connecting the output to ground through a 100- n-channel MOSFET when the device is put in shutdown mode.

  The Si91872 features reverse battery protection to limit reverse current flow to approximately 1-
A in the event reversed battery is applied at the input, thus preventing damage to the IC.The Si91872 is available in both the standard and lead (Pb)-free 5-pin MLP33 PowerPAK packages and is specified to operate over the industrial temperature range of−40C to 85.