MIC37110/MIC37112 MIC37120/MIC37122 High-Performance, Low-Noise, 1A LDOs General Description Features The MIC37110/MIC37112 and MIC37120/MIC37122 are Input voltage range: 2.375V to 5.5V high-performance, low-noise, low dropout regulators. Each Output voltage adjustable down to 1.0V of these LDOs is capable of sourcing 1A output current, (MIC37112/MIC37122) offers high power supply rejection, and low output noise. Stable with small, 2.2F ceramic output capacitor These general purpose LDOs are most suitable for 230mV typical dropout at 1A consumer applications such as multimedia devices, set-top 1A minimum guaranteed output current boxes, Blu-ray players, handheld devices, and gaming consoles. 2.0% initial accuracy The MIC37112 and MIC37122 feature adjustable output Low ground current voltages while the MIC37110 and MIC37120 come in fixed High PSRR: >60dB, up to 1kHz 1.8V output voltage options. All devices feature 2% initial Output auto-discharge circuit (MIC37120/MIC37122) output voltage accuracy, typical dropout of 230mV at 1A, Thermal-shutdown and current-limit protection and low ground current. This family of low-noise regulators is available in 2mm x 2mm Thin MLF , SOIC-8 and SOT-223 packages and they Applications all have an operating junction temperature range of 40C Mobile phones and consumer multimedia devices to +125 C. Set-top boxes and Blu-ray players Data sheets and support documentation can be found on Micrels web site at: www.micrel.com. Gaming consoles Tablets and handheld devices GPS receivers Typical Application Dropout Voltage vs. Output Current 400 V = 2.5V IN V = 0.95 * 1.0V ADJ ADJUSTABLE OPTION 300 T = 25C A 200 100 0 0.0 0.2 0.4 0.6 0.8 1.0 OUTPUT CURRENT (A) MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 MIC37110/MIC37112 Micrel, Inc. MIC37120/MIC37122 Ordering Information (1,2) Part Number Output Voltage Top Mark Output Auto-Discharge Package MIC37110-1.8YS 1.8V ZHG No SOT-223-3L MIC37110-1.8YM 1.8V No SOIC-8L GHZ MIC37110-1.8YMT 1.8V No 2mm 2mm Thin MLF-6L MIC37112YM Adjustable No SOIC-8L AZZ MIC37112YMT Adjustable No 2mm 2mm Thin MLF-6L MIC37120-1.8YM 1.8V Yes SOIC-8L 1H8 MIC37120-1.8YMT 1.8V Yes 2mm 2mm Thin MLF-6L MIC37122YM Adjustable Yes SOIC-8L ZAZ MIC37122YMT Adjustable Yes 2mm 2mm Thin MLF-6L Note: 1. RoHS compliant with high-melting solder exemption. 2. Temperature range is -40C to +125C Pin Configuration SOT-223 (S) 2mm x 2mm Thin MLF - 6 Lead (MT) MIC371x0-1.8 (Fixed) MIC371xx (Fixed/Adjustable) 8-Pin SOIC (M) 8-Pin SOIC (M) MIC371x0-1.8 (Fixed) MIC371x2 (Adjustable) M9999-121312-A December 2012 2