MIC94060/94061 Micrel MIC94060/94061 100mΩSC-70-6 Smart Load Switch Final General Description Features The MIC94060 and MIC94061 are smart high-side load switches housed in the SC-70-6 package. The devices contain a low on-resistance, 100mΩ(max) p-channel MOSFET that is driven by built-in level-shift and slew-rate control circuitry. The low on-resistance of the devices allows for them to support over 2A of continuous current. The MIC94061 features an active pull-down circuit that discharges capacitive loads through a 200Ω switch when the IC is set to the OFF state. Pull down circuitry keeps the MIC94060/1 in a default OFF state until the EN pin is pulled to a high level. The built-in level shift circuitry allows for a logic signal that may be different from the supply voltage to switch the high-side P-channel MOSFET on or off. The 1µs turn-on slew rate control prevents in-rush current from causing glitches on the supply rail. Battery life is saved in portable applications with the IC’s low quiescent current of 2µA and low shutdown current of <1µA. Their 1.8V to 5.5V operating voltage range makes the MIC94060/1 suitable for 1-cell Li Ion, 2- to 3-cell NiMH / NiCad / Alkaline, as well as other sub-5V input applications. Integrating the level-shift and slew-rate control circuitry saves valuable board space and reduces component placement cost compared to discrete solutions. The MIC94060/1 are housed in the Teeny™ SC-70-6 package and have a junction temperature range of –40°C to +150°C. • 1.8V to 5.5V input voltage range • Built-in level shift circuitry: Can be driven by 1.5V logic • Low on-resistance p-channel MOSFET: 77mΩ at VGS = 4.5V (typ) 2A continuous current • Built-in slew-rate control: Controlled 1µs turn-on rise-time Fast 60ns turn-off fall time • Low 2µA quiescent current • <1µA micropower shutdown • Built-in fast-off load discharge circuit (MIC94061) • Teeny™ SC-70-6 package • –40°C to +150°C junction temperature range Applications • Load switch in portable applications: Cellular phones PDAs MP3 players Digital cameras Notebook PCs Barcode scanners • Battery switch over circuits • Level translators Typical Application 77mW VIN EN Level Shift and Slew Rate Control 77mW VIN LOAD EN Level Shift Slew Rate Control and Load Discharge LOAD 200W MIC94061 MIC94060 Load Switch Application with Capacitive Load Discharge Load Switch Application Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com July 2002 1 MIC94060/94061 MIC94060/94061 Micrel Ordering Information Part Number Load Discharge Circuitry Marking Junction Temp. Range Package MIC94060BC6 NO P54 –40°C to +150°C SC-70-6 MIC94061BC6 YES P55 –40°C to +150°C SC-70-6 Pin Configuration 3 2 1 4 5 6 MIC94060/1 SC-70-6 (C6) Pin Description Pin Number Pin Name 1 VOUT Drain of P-channel MOSFET. No bypass capacitor required. 2, 5 GND Ground connections. 3 EN Enable input. 4 VIN Source of P-channel MOSFET. No bypass capacitor required. 6 NC No connect MIC94060/94061 Pin Function 2 July 2002 MIC94060/94061 Micrel Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) Input Voltage (VIN) ........................................................ +6V Enable Voltage (VEN) .................................................... +6V Continuous Drain Current (ID) Note 3 TA = 25°C .................................................................. ±2A TA = 85°C ............................................................... ±1.4A Pulsed Drain Current (IDP) Note 5 ................................ ±6A Continuous Diode Current (IS) Note 7 ..................... –50mA Power Dissipation Note 3 SC-70-6 lead (TA = 85°C) .................................. 270 mW Ambient Storage Temperature (TS) ......... –55°C to +150°C ESD Rating Note 4 Input Voltage Range (VIN) ............................... 1.8V to 5.5V Junction Temperature Range (TJ) ........... –40°C to +150°C Package Thermal Impedance Note 3 θJA SC-70-6 lead ............................................... 240°C/W Electrical Characteristics TA = 25°C, unless otherwise specified. Symbol Parameter Condition Min VEN(th) EN Threshold Voltage VIN = 1.8V to 4.5V, ID = –250µA 0.5 IEN EN Input Current (Quiescent Current) VIN = VEN = 5.5V IVIN OFF State Leakage Current VEN = OPEN or 0V, VIN = +5.5V RDS(ON) P-Channel Drain-Source On-Resistance VIN = 4.5V, ID = –100 mA; VEN = 1.5V VIN = 3.6V, ID = –100 mA; VEN = 1.5V VIN = 2.5V, ID = –100 mA; VEN = 1.5V VIN = 1.8V, ID = –100 mA; VEN = 1.5V RSHUTDOWN Turn-off Impedance (94061) Typ Max Units 1.2 V 4 µA 1 µA 77 85 100 145 100 115 140 200 mΩ mΩ mΩ mΩ VIN = 3.6V, VEN = 0V or OPEN 200 300 Ω 850 1500 ns 1 5 µs Static 2 Dynamic (Note 6) td(on) Turn-On Delay Time VIN = 3.6V, ID = –100mA, VEN = 1.5V tr Turn-On Rise Time VIN = 3.6V, ID = –100mA, VEN = 1.5V td(off) Turn-Off Delay Time VIN = 3.6V, ID = –100mA, VEN = 1.5V 100 150 ns tf Turn-Off Fall Time VIN = 3.6V, ID = –100mA, VEN = 1.5V 60 100 ns 0.5 Note 1. TA = 25°C unless otherwise noted. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(Max), the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. Note 2. This device is not guaranteed to operate beyond its specified operating rating. Note 3. Mounted on 1 square-inch pad of 2 oz. copper. Note 4. IC devices are inherently ESD sensitive. Handling precautions required. Note 5. Pulse width < 300µs with <2% duty cycle. Note 6. Dynamic specifications are guaranteed by design. Note 7. Body diode current conduction is not recommended. July 2002 3 MIC94060/94061 MIC94060/94061 Micrel Typical Characteristics EN Threshold Voltage vs. Input Voltage 1.2 500 VDS = 3.6V 1.3 I = 0.1A D 1.1 450 400 1.2 1.1 1 0.9 0.9 0.8 0.7 160 120 140 ID = –250µA 0.5 1.5 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 80 100 0.7 40 60 0.6 0 20 0.8 TEMPERATURE (°C) Voltage Drop vs. Load Current 500 10 350 300 250 200 150 100 50 0 VIN = 4.5V 0 0.5 1 1.5 2 2.5 LOAD CURRENT (A) MIC94060/94061 350 300 250 200 On Resistance vs. Input Voltage IL = 1.5A 150 100 50 I = 0.1A L 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) Turn On Time vs. Input Voltage 9 8 VIN = 2.5V RISE TIME (µs) 450 VIN = 1.8V 400 VDROP (mV) 1 RDS-ON (mΩ) EN THRESHOLD (V) 1.4 -40 -20 RDS-ON (NORMALIZED) RDS-On Variance with Temperature 3 7 6 5 4 3 2 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 INPUT VOLTAGE (V) 4 July 2002 MIC94060/94061 Micrel Timing Waveforms Turn-On Response Enable (1V/div.) Turn-Off Response Load Current (1mA/div.) Enable (1V/div.) Load Current VOUT (1mA/div.) (1V/div.) July 2002 VIN = 3.6V VOUT (1V/div.) VIN = 3.6V TIME (2µs/div.) TIME (2µs/div.) 5 MIC94060/94061 MIC94060/94061 Micrel Package Information 0.65 (0.0256) BSC 1.35 (0.053) 2.40 (0.094) 1.15 (0.045) 1.80 (0.071) 2.20 (0.087) 1.80 (0.071) DIMENSIONS: MM (INCH) 1.00 (0.039) 1.10 (0.043) 0.80 (0.032) 0.80 (0.032) 0.18 (0.007) 0.10 (0.004) 0.10 (0.004) 0.00 (0.000) 0.30 (0.012) 0.15 (0.006) 0.30 (0.012) 0.10 (0.004) SC-70-6 Pin (C6) MICREL, INC. 1849 FORTUNE DRIVE TEL + 1 (408) 944-0800 FAX SAN JOSE, CA 95131 + 1 (408) 944-0970 WEB USA http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc. © 2002 Micrel, Incorporated MIC94060/94061 6 July 2002