Data Sheet No. PD94129 revA
IRU1150(PbF)
4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR DESCRIPTION
The IRU1150 is ...
Data Sheet No. PD94129 revA
IRU1150(PbF)
4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE
REGULATOR DESCRIPTION
The IRU1150 is a 4A
regulator with extremely low dropout voltage using a proprietary bipolar process that achieves comparable equivalent on-resistance to that of discrete MOSFETs. This product is specifically designed to provide well regulated supply for applications requiring 2.8V or lower voltages from 3.3V ATX power supplies where high efficiency of a switcher can be achieved without the cost and complexity associated with switching
regulators. One such application is the new graphic chip sets that require anywhere from 2.4V to 2.7V supply such as the Intel I740 chip set.
FEATURES
0.7V Dropout at 4A Fast Transient Response 1% Voltage Reference Initial Accuracy Built-In Thermal Shutdown
APPLICATIONS
3.3V to 2.7V Intel I740 Chip Set
TYPICAL APPLICATION
3.3V
C1 100uF
VIN VCTRL
5 4 3 2 1
R1 102 R2 118 C3 100uF
IRU1150
VOUT Adj VSENSE
2.7V
5V
C2 100uF
Figure 1 - Typical application of IRU1150 in a 3.3V to 2.7V for I740 chip.
PACKAGE ORDER INFORMATION
Basic Part (Non-Lead Free)
TJ (°C) 0 To 125 5-PIN PLASTIC TO-263 (M) IRU1150CM 5-PIN PLASTIC Ultra Thin-PakTM (P) IRU1150CP 8-PIN PLASTIC SOIC (S) IRU1150CS
Leadfree Part
TJ (°C) 0 To 125 5-PIN PLASTIC TO-263 (M) Not available 5-PIN PLASTIC Ultra Thin-PakTM (P) Not available 8-PIN PLASTIC SOIC (S) IRU1150CSPbF
www.irf.com
1
IRU1150(PbF)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VIN) ...................................
