MAX1602 19-1125 Rev 0 9/96 Single-Channel CardBus and PCMCIA VCC/VPP Power-Switching Network General Description Features The MAX1602 DC power-switching IC contains a net- Supports a Single PC Card/CardBus Socket work of low-resistance MOSFET switches that deliver 1A, 0.25 Max 3.3V VCC Switch selectable VCC and VPP voltages to a single CardBus 1A, 0.25 Max 5V VCC Switch or PC Card host socket. Key features include low- resistance switches, small packaging, soft-switching Soft Switching for Low Inrush Surge Current action, and compliance with PCMCIA specifications for Overcurrent Protection 3V/5V switching. 3.3V-only power switching for fast, Overcurrent/Thermal-Fault Flag Output 32-bit CardBus applications is supported in two ways: low-resistance 3.3V switches allow high 3.3V load cur- Thermal Shutdown at T = +150C j rents (up to 1A) and completely independent internal Independent Internal Charge Pumps charge pumps let the 3.3V switch operate normally, even if the +5V and +12V supplies are disconnected or Break-Before-Make Switching Action turned off to conserve power. The internal charge 11A Max Standby Supply Current pumps are regulating types that draw reduced input 5V and 12V Not Required for Low-R DS(ON) current when the VCC switches are static. Power con- 3.3V Switching sumption is automatically reduced to 11A max when the outputs are high-Z or GND. Complies with PCMCIA 3V/5V Switching Other key features include guaranteed specifications Specifications for output current limit level, and guaranteed specifi- Super-Small 16-Pin QSOP Package cations for output rise/fall times (in compliance with Code Compatible with: PCMCIA specifications). Reliability is enhanced by Cirrus CL-PD67XX Family thermal-overload protection, accurate current limiting, an overcurrent-fault flag output, and undervoltage lock- Databook DB86184 outs. The CMOS/TTL-logic interface is flexible, and can Intel 82365SL (industry-standard coding) tolerate logic input levels in excess of the positive sup- ply rail. Simplified Block Diagram The MAX1602 fits a complete CardBus/PCMCIA switch into a space-saving, 16-pin QSOP package. VPP 12IN MAX1602 Applications VCC VX VCC Data Loggers VY VCC Handy-Terminals VY VCC Docking Stations VDD PCMCIA Read/Write Drives OVERCURRENT DECODE CONTROL AND INPUTS LOGIC FAULT THERMAL SHUTDOWN CODE CODE SELECT Ordering Information GND PART TEMP. RANGE PIN-PACKAGE MAX1602EEE -40C to +85C 16 QSOP Pin Configuration appears on last page. Maxim Integrated Products 1 For free samples & the latest literature: Single-Channel CardBus and PCMCIA VCC/VPP Power-Switching Network ABSOLUTE MAXIMUM RATINGS Inputs/Outputs to GND VCC Short Circuit to GND ..........................................Continuous (VX, VY, VCC) (Note 1) ..........................................-0.3V, +6V VPP Short Circuit to GND...........................................Continuous VPP Input/Output to GND Continuous Power Dissipation (T = +70C) A (12IN, VPP) (Note 1) ............................................-0.3V, +15V QSOP (derate 8.3mW/C above +70C) ....................667mW Logic Inputs to GND (A0VCC, A1VCC, Operating Temperature Range A0VPP, A1VPP) (Note 1)........................................-0.3V, +6V MAX1602EEE.................................................-40C to +85C CODE Input to GND ........................................-0.3V, (VY + 0.3V) Storage Temperature Range .............................-65C to +160C VCC Output Current (Note 2)...................................................4A Lead Temperature (soldering, 10sec) .............................+300C VPP Output Current (Note 2).............................................260mA Note 1: There are no parasitic diodes between any of these pins, so there are no power-up sequencing restrictions (for example, logic input signals can be applied even if all of the supply voltage inputs are grounded). Note 2: VCC and VPP outputs are internally current limited. See the Electrical Characteristics. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VY = 3.3V, VX = 5V, 12IN = 12V, T = 0C to +85C, unless otherwise noted. Typical values are at T = +25C.) A A PARAMETER CONDITIONS MIN TYP MAX UNITS POWER-SUPPLY SECTION VX, VY 3.0 5.5 Input Voltage Range V 12IN 11 13 VY falling edge 2.4 2.6 2.8 12IN falling edge 1.8 3.0 Undervoltage Lockout Threshold V 12IN rising edge 5.0 8.0 10.0 VX falling edge 1.4 1.9 2.8 All switches 0V or high-Z, VY Standby Supply Current 311 A control inputs = 0V or VY, T = +25C A VX all switches 0V or high-Z, VX Standby Supply Current 1 A control inputs = 0V or VY, T = +25C A All switches 0V or high-Z, 12IN Standby Supply Current 1 A control inputs = 0V or VY, T = +25C A Any combination of VY switches on, VY Quiescent Supply Current 20 200 A control inputs = 0V or VY, no VCC loads VX Quiescent Supply Current Control inputs = 0V or VY, no VCC loads 10 50 A VPP 12V switches on, 12IN Quiescent Supply Current 5 100 A control inputs = 0V or VY, no VPP loads VCC SWITCHES Operating Output Current Range VCC, VX = VY = 3V to 5.5V 01 A 12IN = 0V to 13V, VY = 3V, VX = 0V to 5.5V, On-Resistance, VY Switches 0.09 0.25 I = 1A, T = +25C SWITCH A 12IN = 0V to 13V, VX = 4.5V, VY = 0V to 5.5V, On-Resistance, VX Switches 0.09 0.25 I = 1A, T = +25C SWITCH A Output Current Limit VCC 1.2 4 A 2 MAX1602