MIC49500

Features:

•  Input voltage range:
^VIN: 1.4V to 6V
_^VBIAS: 3.0V to 6V
• Stable with 10µF ceramic output capacitor
• +1.0% initial output tolerance
• Maximum dropout (^VIN ^VOUT) is 500mV over temperature
• Adjustable output voltage down to 0.7V
• Ultra Fast Transient Response (Up to 10MHz bandwidth)
• Excellent line and load regulation specifications
• Logic controlled shutdown option
• Thermal shutdown and current limit protection
• Thin 7-pin S-Pak package
• TO-263 7-pin package
• 40°C to +125°C operating junction temperature range


Application

• ASIC Core Voltage Regulator
• PLD/FPGA Core Power Supply
•  Linear Point-of-Load Conversion
• High Speed Post-Regulator


Pinout

Pin Number S-Pak-7	Pin Name (Fixed)	Pin Name (Adj)	Pin Function
1	EN	EN	Enable: TTL/CMOS compatible input. Logic high = enable, logic low or open = shutdown.
2	VBIAS	VBIAS	Bias Supply: Bias supply input for powering all internal circuitry of the device, except the main current path.
3	VIN	VIN	Input Voltage: Main Power Input Supply. Supplies main current to output device.
4	GND	GND	Ground: Package TAB is connected to Ground.
5	VOUT	VOUT	Output Voltage: Regulator Output.
6	NC		No Connect
7	VSNS	.	Remote Voltage Sense: Connect direct the load to improve regulation. Connect direct to pin 6 if not used.
7	.	ADJ	Adjust Input. Connect external resistor divider to program output voltage.

Specifications

Supply Voltage (^V_IN) ............................................. 6.5V
Bias Supply Voltage (^V_BIAS) .................................. 6.5V
Enable Input Voltage (^V_EN)................................... 6.5V
Power Dissipation............................. Internally Limited
ESD Rating⁽³⁾.........................................................3kV


Description

The MIC49500 is an ultra-high-bandwidth, low- dropout, 5.0A voltage regulator ideal for poweringcore voltages of low-voltage microprocessors. The MIC49500 implements a dual supply configuration allowing for very low output impedance and very fast transient response.

The MIC49500 requires a bias input supply and a main input supply, allowing for ultra-low input voltageson the main supply rail. The input supply operatesfrom 1.4V to 6V and the bias supply requires between 3V and 6V for proper operation. The MIC49500 canregulate to an output voltage as low as 0.7V, making itan ideal product for low-voltage to low-voltageconversion.

The MIC49500 requires a minimum of outputcapacitance for stability, working optimally with anytype of capacitor, including small ceramic capacitors.Available in fixed output voltages from 0.9V to 1.8Vand adjustable output voltages down to 0.7V, it comes in both 7-pin S-Pak and TO-263packages. The MIC49500 is rated to the full operatingtemperature range of -40°C to 125°C junctiontemperature.