MAX1729EUB Maxim Integrated Products, MAX1729EUB Datasheet
MAX1729EUB
Specifications of MAX1729EUB
Available stocks
Related parts for MAX1729EUB
MAX1729EUB Summary of contents
Page 1
... Internal Feedback Mode Programmable in External Feedback Mode Dynamic Control of the Output Voltage 67µA Supply Current 0.4µA Shutdown Current 10-Pin µMAX Package (1.09mm max height) Evaluation Kit Available (MAX1729EVKIT) PART MAX1729EUB Applications 2.7V to 5.5V DIGITAL GND PWM CONTROLLER LX PS ...
Page 2
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation ABSOLUTE MAXIMUM RATINGS IN to GND .................................................................-0.3V to +6V LX, PS, OUT to GND...............................................-0.3V to +20V CTLIN, FB, REF, COMP GND ...........-0. ...
Page 3
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation ELECTRICAL CHARACTERISTICS (V = +3V, CTLIN = IN GND PARAMETER SYMBOL CTLIN Low Voltage CTLIN Bias Current COMP Impedance R COMP CTLIN ...
Page 4
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation (Circuit of Figure +25°C, unless otherwise noted.) A EFFICIENCY vs. OUTPUT CURRENT V = 9.4 (CTLIN AT 50% DUTY CYCLE) OUT ...
Page 5
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation (Circuit of Figure +25°C, unless otherwise noted.) A DELAY TO SHUTDOWN V CTLIN 5V/div V REF 1V/div V TC 1V/div V OUT V = ...
Page 6
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation PIN NAME 1 IN Supply Input. Bypass with 0.1µF capacitor to ground. Connect to supply side of inductor (L1 Temperature-Sensor Output. Bypass to GND with ...
Page 7
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation IN TC BOOST TEMPERATURE CONVERTER SENSOR LDO REF VOLTAGE LINEAR REFERENCE REGULATOR MAX1729 FB FEEDBACK CONTROL 122mV SHUTDOWN CONTROL V REF CTLIN GND COMP GND NOTE: SWITCH ...
Page 8
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation To use a DC control signal to adjust the output voltage, use the circuit shown in Figure 4. In this configuration governed by the following ...
Page 9
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation 2) Given the maximum output voltage (V mum output voltage (V ), calculate values for R3 and MIN R4 as follows 1/2 V – ...
Page 10
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation Table 1. Recommended Inductors SUPPLIER PART Murata LQH3C221K04M00 Panasonic ELT3KN115B Table 2. Recommended Capacitor Values CAPACITANCE CAPACITOR C6* *Use a low-leakage capacitor. ...
Page 11
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation ______________________________________________________________________________________ Package Information 11 ...
Page 12
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation 12 ______________________________________________________________________________________ NOTES ...