1237SC Datasheet | International Rectifier

FEATURES Stable with Ceramic Capacitor Fixed 8V, 3.3V and 2.6V Fast Transient Response Output Current Limiting for each outputs Built-In Thermal Shutdown DESCRIPTION The IRU1237SC voltage regulator solution contains three integrated, fixed, linear voltage regulators in one 7-pin surface mount package. The first is a 2.6V regulator to power the read channel and integrated controller/ m P. The second is a 3.3V regulator to power the controller I/O and memory chips requiring 3.3V. The last is an 8V regulator to power the preamp chip. The bandgap reference, the 8V ground, and the substrate are all tied to a mon ground pin, while the 2.6V and 3.3V ground is tied to a separate ground pin. This grounding scheme allows for improved noise isolation between the 8V regulator and the 2.6V and 3.3V regulators. The 2.6V and 3.3V regulators shall each be capable of 1.2A continuous for a 5.25V input. The 8V regulator shall be capable of 0.2A continuous for a 13.2V input. APPLICATIONS Hard Disk Drive Multi-Outputs Applications High Efficiency Linear Regulator TYPICAL APPLICATION .. V26 VDD 2.6V / 1.2A 10u F 12V 1u F IRU1237SC V8 Gnd8 VCC 10u F 1u F 8V / 200m A 5V 3.3V / 1.2A V33 Gnd26/33 10u F Figure 1 - Typical application of IRU1237SC. PACKAGE ORDER INFORMATION TJ (°C) 0 To 150 7-PIN PLASTIC Ultra Thin-Pak TM (P) IRU1237SCCP PACKAGE MARKING US1237SCCP Rev. 1.2 07/14/03 .irf. IRU1237SC ABSOLUTE MAXIMUM RATINGS Input Voltage (V CC) 18V Input Voltage (V DD) 18V Operating Junction Temperature Range 0°C To 150°C Operating Ambient Temperature Range 0°C To 70°C Storage Temperature Range -65°C To +150°C ESD Capability (Human Body Model) 2000V PACKAGE INFORMATION 7-PIN ULTRA THIN-PAKTM (P) 7 6 5 4 3 2 1 V 26 V DD V8 Gnd8 Vcc V 33 Gnd 26/33 θJA=30°C/W for 1"sq...