Advanced Power Electronics Corp. Adjustable Precision Shunt Regulator Description AP432C Features The AP432C is a low voltage three terminal Low voltage operation (1.24V) adjustable shunt regulator with a guaranteed Adjustable output voltage V0 =VREF to 8V thermal temperature Wide operating current range 60µA to 100mA ranges. The output voltage can be set to any value Low dynamic output impedance 0.30Ω (Typ.) betwe en V REF (approximately 1.24 V) to 8V with Trimmed bandgap design up to + 0.5%. two external resistors. This device has a typical ESD rating is 2.5KV(Per MIL-STD-883D) output impedance of 0.30Ω. Active output circuitry RoHS Compliant and 100% Lead (Pb)-Free. stability over applicable provides a very sharp turn on characteristic, making this device excellent replacement for Zener diodes Halogen Free Product Application in many applications. The AP432C is characterized for operation from 0oC to 105oC, and four package options (SOT-23 and TO-92) allow the designer the opportunity to select the proper package for their applications. Linear Regulators Adjustable Supplies Switching Power Supplies Battery Operated Computers Instrumentation Computer Disk Drives Pin Configuration SOT-23-3 TO-92 (Top View) (Top View) Ordering Information AP432CX-X N : SOT-23 T : TO-92 A : 0.5% B : 1% This datasheet contains new product information. Advanced Power Electronics Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. 1 20130108V3.1 Advanced Power Electronics Corp. AP432C Absolute Maximum Rating 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 Thermal Resistance θ JA Lead Temperature (Soldering) 10 seconds 230 (SOT-23-3) °C/W 220 (TO-92) TLEAD 260 °C Electrical Characteristics Parameter Reference Voltage 0.5% 1.0% Deviation of Reference Voltage over Full Temperature Range Ratio of Change in Reference Voltage to the Change in Cathode Voltage Reference Current Deviation of Reference Current over Full Temperature Range Minimum Cathode Current for Regulation Off-state Cathode Current Symbol Test Conditions & Circuit Min Typ Max Unit VREF Test circuit #1 VKA = VREF, IKA = 10mA 1233 1228 1240 1240 1246 1252 mV -- 10 25 mV -- -1.0 -2.7 mV/V -- 0.15 2 µA -- 0.10 0.50 µA -- 60 100 µA -- 0.04 0.8 µA -- 0.30 1 Ω Test circuit #1 VI(DEV) VKA = VREF, IKA = 10mA, TA = 0°C - 105°C ∆VREF/∆VKA 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 = ∞ TA = 0°C - 105°C IMIN IOFF Test circuit #1 VKA = VREF Test circuit #3 VKA = 8V, VREF = 0 Test circuit #1 Dynamic Impedance | ZKA | IKA = 100µA - 80mA, VKA = VREF, f ≤ 1kHZ Note 1: Upon Customer Request. 2 Advanced Power Electronics Corp. AP432C Typical Performance Characteristics Cathode Current VS Cathode Voltage Cathode Current (mA) 150 100 50 0 -50 -100 -150 -1.5 -1 -0.5 0 0.5 1 1.5 Cathode Voltage (V) Reference Volgate VS Temperature （Iload=10mA） Reference Volgate (V) 1.260 1.250 1.240 1.230 1.220 1.210 1.200 0 30 60 90 120 150 Temperature (℃) Reference Input Current VS Temperature （R1=10K，R2=∞，Iload=10mA） Reference Current (nA) 1000 800 600 400 200 0 0 30 60 90 120 150 Temperature (℃) 3 Advanced Power Electronics Corp. AP432C Stability Boundary Condition 100 IKA (mA) 80 60 40 20 VKA=VREF (1.24V) CL (uF) VKA=2V 1 0.1 0.01 0.001 0 VKA=3V 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, AP432C is unconditional stable with IK from 0 to 100mA and with CL from 0.001uF to 1uF. 4 Advanced Power Electronics Corp. AP432C Block Diagram Symbol Diagram Cathode Cathode Ref + Ref Vref Anode Anode Test Circuits Input V KA Input VKA I KA Input VKA I off I KA R1 Iref R2 Vref Vref R1 VKA = Vref (1+ ) + Iref x R1 R2 Test Circuit 1: Test Circuit 2: Test Circuit 3: VKA = VREF VKA > VREF Off State Current Application Circuit VIN R VOUT R1 AP432C Vref VOUT = Vref (1+R1 ) R2 R2 GND 5 Advanced Power Electronics Corp. AP432C MARKING INFORMATION SOT-23 Part Number : RH RHSS Date Code : SS SS:2004,2008,2012… SS:2003,2007,2011… SS:2002,2006,2010… SS:2001,2005,2009… TO-92 Part Number 432C YWWS Date Code (YWWS) Y : Last Digit Of The Year WW : Weak S : Squence 6