EC432L Adjustable Precision Shunt Regulator Descriptions The EC432L is a low voltage three terminal adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between VREF (approximately 1.24 V) to 8V with two external resistors. This device has a typical output impedance of 0.30Ω. Active output circuitry provides a very sharp turn on characteristic, making this device excellent replacement for Zener diodes in many applications. The EC432L is characterized for operation from -40℃ to 105℃, and two package options (SOT-23 、SC59 and TO-92) allow the designer the opportunity to select the proper package for their applications. Feature ■ Low voltage operation (1.24V) ■ Adjustable output voltage V0 =VREF to 8V ■ Wide operating current range 60A to 100mA ■ Low dynamic output impedance 0.30Ω (Typ.) ■ Trimmed bandgap design up to + 0.5%. ■ ESD rating is 2.5KV(Per MIL-STD-883D) ■ 100% Lead (Pb)-Free. Application ■ Linear Regulators ■ Adjustable Supplies ■ Switching Power Supplies ■ Battery Operated Computers ■ Instrumentation ■Computer Disk Drives Ordering Information EC432L NN XXX X R：Tape & Reel SB1：SOT23 B1：SC59-3L A6：TO-92-3L E-CMOS Corp. (www.ecmos.com.tw) Page 1 of 7 4K11N-Rev.F001 EC432L Adjustable Precision Shunt Regulator Part Number Package EC432LNNSB1R SOT23 EC432LNNB1R SC59-3L Marking S432Lx Marking Information 1. The last character is the batch number. 2. Lead-free package isindicated by a dot on top of the last character. 1. The last character is the batch number. S432Lx 2. Lead-free package isindicated by a dot on top of the last character. 1. xxxx is the batch number. EC432LNNA6R SE432L xxxx TO92-3L 2. Lead-free package is indicated by LF after xxxx Pin Configuration SOT-23-3 /SC59-3L TO-92 (Top View) (Top View) Absolute Maximum Ratings Parameter Symbol Maximum Units Cathode Voltage VKA 8 V Continuous Cathode Current I KA 150 mA Reference Current I REF 3 mA Operating Junction Temperature Range TJ 150 °C Storage Temperature Range TSTG -45 to 150 °C θ JA 230 (SOT-23-3) Thermal Resistance Lead Temperature (Soldering) 10 seconds E-CMOS Corp. (www.ecmos.com.tw) 220 (TO-92) TLEAD Page 2 of 7 260 °C/W °C 4K11N-Rev.F001 EC432L Adjustable Precision Shunt Regulator Electrical Characteristics Parameter Symbol Test Conditions & Circuit 0.5% 1.0% Reference 1.5% Voltage Test circuit #1 VREF VKA = VREF, IKA = 10mA 2.0% 1.25V 1% (1) Min Typ Max Unit 1234 1240 1246 1228 1240 1252 1221 1240 1259 1215 1240 1265 1237 1250 1263 -- 68 -- 1.0 2.7 mV/V -- 0.15 2 µA -- 0.10 -- 60 100 µA -- 0.04 0.8 µA -- 0.30 1 Ω mV Test circuit #1 Deviation of Reference Voltage over VI(DEV) VKA = VREF, IKA = 10mA, mV Full Temperature Range TA =-40°C - 105°C Ratio of Change in Reference Voltage ︱∆VREF/∆VKA︱ to the Change in Cathode Voltage Reference Current Deviation of Reference Current over IREF Test circuit #2 IKA = 10mA, ∆VKA = 8V to VREF Test circuit #2 IKA = 10mA, R1=10kΩ, R2 = ∞ Test circuit #2 II(DEV) IKA = 10mA, R1=10kΩ, R2 =∞ µA Full Temperature Range TA = 0°C - 105°C Minimum Cathode Current for Test circuit #1 IMIN Regulation Off-state Cathode Current VKA = VREF Test circuit #3 IOFF VKA = 8V, VREF = 0 Test circuit #1 Dynamic Impedance | ZKA | IKA = 100µA - 80mA, VKA = VREF, f ≤ 1kHZ Note 1: Upon Customer Request. E-CMOS Corp. (www.ecmos.com.tw) Page 3 of 7 4K11N-Rev.F001 EC432L Adjustable Precision Shunt Regulator Typical Performance Characteristics E-CMOS Corp. (www.ecmos.com.tw) Page 4 of 7 4K11N-Rev.F001 EC432L Adjustable Precision Shunt Regulator The areas under the curves represent conditions that may cause the device to oscillate. For VKA = 2V and 3V curves, R2 and VBAT were adjusted to establish the initial VKA and IK conditions with CL = 0. VBAT and CL then were adjusted to determine the ranges of stability. As the graph suggested, EC432L is unconditional stable with IK from 0 to 100mA and with CL from 0.001uF to 1uF. Symbol Diagram Block Diagram Test Circuits E-CMOS Corp. (www.ecmos.com.tw) Page 5 of 7 4K11N-Rev.F001 EC432L Adjustable Precision Shunt Regulator Application Circuit EC432 Outline Drawing E-CMOS Corp. (www.ecmos.com.tw) Page 6 of 7 4K11N-Rev.F001 EC432L Adjustable Precision Shunt Regulator E-CMOS Corp. (www.ecmos.com.tw) Page 7 of 7 4K11N-Rev.F001