MAX1886. TOP PART TEMP. RANGE PIN- PACKAGE M ARK MAX1886EZK -40 C to +85 C 5 Thin SOT23-5* ADQL

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1 19-95; Rev ; 8/1 µ µ TOP PART TEMP. RANGE PIN- PACKAGE M ARK EZK -4 C to +85 C 5 Thin SOT3-5* ADQL *Requires a special solder temperature profile described in the Absolute Maximum Ratings section. TOP VIEW V REF FB+ OUT V O OUT GND 1 5 FB- FB- GND 3 4 FB+ THIN SOT3-5 Maxim Integrated Products 1

2 ABSOLUTE MAXIMUM RATINGS to GND...-.3V to +14V FB-, FB+, OUT to GND...-.3V to ( +.3V) Continuous Power Dissipation (T A = +7 C) 5-Pin Thin SOT3 (derate 7.1mW C above +7 C)...77mW Operating Temperature Range...-4 C to +85 C Junction Temperature C Storage Temperature Range C to +15 C This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be exposed to during board level solder attach and rework. Maxim recommends the use of the solder profiles recommended in the industry-standard specification, JEDEC A, paragraph 7.6, Table 3 for IR/VPR and convection reflow processes. Preheating, per this standard, is required. Hand or wave soldering is not recommended. 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 ( = 1V, FB- = OUT, V FB+ = 5V, C OUT =.47µF, T A = -4 C to +85 C, unless otherwise noted. Typical values are at T A = +5 C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Supply Range V Supply Current I CC 45 9 µa Input Offset Voltage V OS V FB+ = +5V, no load -5 5 mv Input Bias Current I BIAS -1 1 na Input Offset Current I OS +1.V < V CM < +8.8V -1 1 na Common-Mode Input Range V CM V OS < 1mV over CMR 1. Power-Supply Rejection Ratio PSRR +4.5V < < +13V, V FB+ = +.5V 7 Common-Mode Rejection Ratio CMRR +1.V < V CM < +8.8V 7 Gain-Bandwidth Product GBW Small signal 1/6πC L Hz Small signal (±1mV overdrive).3 Transconductance g m Large signal (±3mV overdrive) 1 ±1mV overdrive, T A = -4 C to +85 C ±175 ±55 Output Current Drive I OUT = 3V or 7V T A = C to +85 C ±5 Thermal Shutdown 17 C Thermal Shutdown Hysteresis 15 C Note 1: The is 1% production tested at T A = +5 C. Specifications over temperature are guaranteed by design. - 1.V V db S ma SUPPLY VOLTAGE 3 REFERENCE 4 VOLTAGE V X R L CL

3 ( = 1V, C OUT = 1µF, V CM = 5V, T A = +5 C, unless otherwise noted.) VOS (mv) INPUT OFFSET VOLTAGE DEVIATION vs. SUPPLY VOLTAGE V CM = / (V) toc1 VOS (mv) INPUT OFFSET VOLTAGE DEVIATION vs. TEMPERATURE = 1V V CM = / TEMPERATURE ( C) toc TRANSCONDUCTANCE (S) TRANSCONDUCTANCE vs. OUTPUT CURRENT T A = -4 C T A = +5 C T A = +85 C OUTPUT CURRENT (ma) toc C SUPPLY CURRENT vs. SUPPLY VOLTAGE +5 C toc NO-LOAD SUPPLY CURRENT vs. TEMPERATURE toc5 I OUT LOAD TRANSIENT ±1V toc6 SUPPLY CURRENT (ma) C SUPPLY CURRENT (ma) mv/div AC-COUPLED SUPPLY VOLTAGE (V) TEMPERATURE ( C) V X 1V/div R L =.5Ω, C L = 1nF, FIGURE 1 4µs/div SHORT-CIRCUIT WAVEFORMS I CC toc7 I OUT ms/div 3

4 ( = 1V, C OUT = 1µF, V CM = 5V, T A = +5 C, unless otherwise noted.) I CC STARTUP WAVEFORM WITHOUT SOFT-START SUPPLY CAPACITOR CHARGING CURRENT toc8 I CC STARTUP WAVEFORMS WITH SOFT-START toc9 1V/div 1V/div V FB+ V FB+ C OUT =.47µF C OUT =.47µF 5µs/div 5µs/div PIN NAME DESCRIPTION 1 OUT µ Output of Buffer Amplifier. Requires a minimum.47µf ceramic filter capacitor to GND. Place the capacitor close to OUT. GND Ground 3 µ Voltage-Supply Input. Bypass to GND with a.47µf capacitor close to the pin. Use the output capacitor of the preceding voltage regulator as the additional filter capacitor. 4 FB+ Noninverting Input to Buffer Amplifier 5 FB- Inverting Input to Buffer Amplifier. Feedback must be taken from the output filter capacitor terminal. µ µ Ω µ 4

5 V IN SWITCHING REGULATOR C1 LINEAR REGULATOR SOURCE DRIVER VOLTAGE PC BOARD PARASITICS 4 3 C.47µF OPTIONAL REFERENCE VOLTAGE CIRCUIT µF TO LCD BACKPLANE GAMMA CORRECTION REFERENCE VOLTAGE TRANSISTOR COUNT: 11 PROCESS: BiCMOS 5

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7 Maxim Integrated Products, 1 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products is a registered trademark of Maxim Integrated Products.

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