MAX8620Y 19-3564 Rev 0 1/05 PMIC for Microprocessors or DSPs in Portable Equipment General Description Features The MAX8620Y micro-power-management integrated Three Regulators and a Reset in One Package circuit (PMIC) powers low-voltage microprocessors or High-Efficiency Step-Down Converter DSPs in portable devices. The PMIC includes a high- Up to 4MHz Fixed Switching Frequency efficiency step-down DC-DC converter, two low- 500mA Guaranteed Output Current dropout linear regulators (LDOs), a microprocessor 0.6V to 3.3V Adjustable Output Voltage reset output, and power-on/off control logic. This device 2% Initial Accuracy maintains high efficiency at light loads with a low 115A Fast Voltage-Positioning Transient Response supply current, and its miniature TDFN package makes Internal Synchronous Rectifier it ideal for portable devices. Two 300mA LDO Regulators The MAX8620Ys step-down DC-DC converter utilizes a 200mV Dropout at 200mA Load proprietary 4MHz hysteretic-PWM control scheme that Low 45V Output Noise RMS allows for ultra-small external components. Internal syn- 3% Accuracy over Line, Load, and Temperature chronous rectification improves efficiency and elimi- Overcurrent Protection nates the external Schottky diode that is required in Nine Pin-Selectable Output-Voltage Settings conventional step-down converters. The output voltage 30ms (min) RESET Output Flag is adjustable from 0.6V to 3.3V, with guaranteed output current up to 500mA. 2.7V to 5.5V Input The MAX8620Ys two LDOs offer low 45V output 115A (typ) Supply Current at No Load RMS noise and a low dropout of only 200mV at 200mA. Each Thermal-Overload Protection LDO delivers at least 300mA of continuous output cur- Tiny 3mm x 3mm x 0.8mm TDFN Package rent. The output voltages are pin selectable from 1.8V to 3.3V for flexibility. Ordering Information A microprocessor reset output (RESET) monitors OUT1 and warns the system of impending power loss allow- PIN- TOP ing safe shutdown. RESET asserts during power-up, PART TEMP RANGE PACKAGE MARK power-down, shutdown, and fault conditions where V is below its regulation voltage. 14 TDFN-EP OUT1 MAX8620YETD -40C to +85C AAB (T1433-2) Applications Typical Operating Circuit Cellular Handsets Smart Phones/PDA Phones V IN 1.80V, 2.60V, 2.80V, 2.85V, IN2 OUT1 3.00V, OR 3.30V* PDAs 300mA IN1 Wireless LAN 1.80V, 2.50V, 2.60V, OUT2 2.85V, OR 3.00V* Microprocessor and DSP Solutions including 300mA MSM, XScale, ARM, and OMAP MAX8620Y V LOGIC BP 100k RESET EN2 RESET OUT3 0.6V TO 3.3V HF PWR LX 500mA PWR ON Pin Configuration appears at end of data sheet. FB SEL1 SEL2 MSM is a trademark of QUALCOMM, Inc. GND XScale is a trademark of Intel Corp. ARM is a trademark of ARM Limited. *USE SEL1 AND SEL2 TO SET V AND V OUT1 OUT2 OMAP is a trademark of Texas Instruments, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLEPMIC for Microprocessors or DSPs in Portable Equipment ABSOLUTE MAXIMUM RATINGS IN1, IN2, PWR ON, RESET, EN2, SEL1, SEL2, Operating Temperature Range ...........................-40C to +85C Junction Temperature......................................................+150C HF PWR, FB, BP to GND ..................................-0.3V to +6.0V OUT1, OUT2 to GND .................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C IN1 Lead Temperature (soldering, 10s) .................................+300C LX Current ......................................................................1.5A RMS Continuous Power Dissipation (T = +70C) A 14-Pin TDFN (derate 18.2mW/C above +70C) .......1454mW 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 (V = V = +3.7V, C = 10F, C = 0.01F, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) IN1 IN2 IN BP A A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V 2.7 5.5 V IN1 V = V = 4.2V, PWR ON = HF PWR = IN1 IN2 Shutdown Supply Current I 5.5 10 A SHDN GND All outputs enabled, no load 115 140 Supply Current I + I A IN1 IN2 V = V = 1.8V, I = I = OUT1 OUT3 OUT1 OUT3 430 500A, OUT2 disabled UNDERVOLTAGE LOCKOUT V = V rising 2.70 2.85 3.05 IN1 IN2 UVLO Threshold V V UVLO V = V falling 2.35 IN1 IN2 THERMAL PROTECTION Thermal-Shutdown Threshold Temperature rising +160 C Thermal-Shutdown Hysteresis 15 C REFERENCE (BP) Reference Bypass Output V 0 I 1A 1.231 1.250 1.269 V BP BP Voltage LOGIC AND CONTROL INPUTS (PWR ON, HF PWR, EN2) PWR ON, HF PWR, EN2 Input V V = V = 2.7V to 4.2V (Note 2) 0.4 V IL IN1 IN2 Low Voltage PWR ON, HF PWR, EN2 Input V V = V = 2.7V to 4.2V (Note 2) 1.44 V IH IN1 IN2 High Voltage Input Bias Current I V = V = V = 0V or 5.5V -1 +1 A INB PWR ON HF PWR EN2 From the rising edge of HF PWR until the HF PWR Timer t 1.05 1.31 1.46 s HF one-shot timer expires (Figure 4) LINEAR REGULATORS (OUT1, OUT2) 0C to +85C -1.3 +1.8 I = 1mA, 3.7V V LOAD IN 5.5V -40C to +85C -1.5 +1.8 OUT1, OUT2 Output-Voltage V , OUT1 % Accuracy V OUT2 1mA I 300mA -1.2 LOAD I = 150mA 0 LOAD OUT1, OUT2 Output Current I 300 mA OUT OUT1, OUT2 Output Current Limit I V = 0V 310 550 940 mA LIM OUT OUT1, OUT2 Dropout Voltage V I = 200mA, T = +85C (Note 3) 200 380 mV DO LOAD A 2 MAX8620Y