Advanced Power Electronics Corp. AP431 ADJUSTABLE PRECISION SHUNT REGULATOR FEATURES DESCRIPTIOON Low Voltage Operation (2.5V) Adjustable Output Voltage V0 =VREF to 18V Wide Operating Current Range 0.4mA to 100mA Low Dynamic Output Impedance 0.5Ω max. ESD Rating is 5.5KV(Per MIL-STD-883D). Halogen Free Product APPLICATIONS Linear Regulators Adjustable Supplies Switching Power Supplies The AP431 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 2.5 V) to 18V with two external resistors (see application circuit). This device has a typical output impedance of 0.2 Ω . Active output circuitry provides a very sharp turn on characteristic, making this device excel lent replacement for Zener diodes in many applications. o The AP431 is characterized for operation from 0 C o to 105 C, and four package options (SOT-23, SOT-89, SO-8 and TO-92) allow the designer the opportunity to select the proper package for their application. Battery Operated Computers Instrumentation Computer Disk Drives TYPICAL APPLICATION ORDERING / PACKAGE INFORMATION (Top View) TO-92 (T) 3 Package Type N : SOT-23 T : TO-92 G : SOT-89 M : SO-8 ( Top View ) Anode AP431X Cathode 1 8 REF Anode 2 7 Anode Anode 3 6 Anode 4 5 NC AP431N 1 2 REF Cathode SOT-23 (N type) (Top View ) NC Data and specifications subject to change without notice 3 Cathode 2 Anode 1 REF SO-8 1 20130522V3.1 Advanced Power Electronics Corp. AP431 ABSOLUTE MAXIMUM RATINGS Cathode Voltage (VKA) ------------------------------------- 18V Continuous Cathode Current (IKA) ---------------------- 150mA Reference Input Current (IREF) --------------------------- 10mA Power Dissipation (PD) --------------------------------------------SOT-23 -------- 0.3W SOT-89 -------- 0.625W SO-8 ----------- 1.25W TO-92 ---------- 0.64W Storage Temperature Range (TST) --------------------- -65 to +150°C Junction Temperature (TJ) -------------------------------- +125°C Thermal Resistance from Junction to ambient (Rth ja) SOT-23 -------- 336°C/W SOT-89 -------- 160°C/W SO-8 ----------- 80°C/W TO-92 ---------- 156°C/W Lead Temperature (Soldering) 10 seconds (TLEAD) 260°C ELECTRICAL SPECIFICATIONS (TA =25oC, unless otherwise specified) Parameter Reference Voltage (Test circuit 1) Deviation of Reference Input Voltage over full temperature range (Test circuit 1) Reference Input Current (Test circuit 2) Deviation of Reference current over full temperature range (Test circuit 2) Ratio of change in reference voltage to the change in cathode voltage (Test circuit 2) SYM VREF VREF(DEV) TYP MAX UNITS 2.47 2.495 2.52 V 4 25 mV - 2 4 uA - 0.4 1.2 uA IKA = 10mA, δVKA=10V -VREF - -1.4 -2.7 mV/V VKA = VREF - 0.4 1 mA - 0.1 1 uA - 0.2 0.5 Ω VKA = VREF, IKA = 10mA VKA = VREF, IKA = 10mA, TA = Full Range IREF IREF(DEV) R1 = 10KΩ, R2 = ∞, IKA= 10mA R1 = 10KΩ, R2 = ∞, IKA = 10mA TA = Full Range Δ V REF Δ V KA Minimum Cathode Current for Regulation (Test circuit 1) IKA(min) Off-state Cathode Current (Test circuit 3) IKA(OFF) Dynamic Impedance (Test circuit 1) MIN TEST CONDITION Z KA VKA = 18V, VREF = 0V V KA = VREF, IKA = 1mA ~ 100mA Frequency < 1KHz 2 Advanced Power Electronics Corp. AP431 BLOCK DIAGRAM TEST CIRCUIT (1): VKA = VREF (2): VKA > VREF (3): Off state current VIN VIN VIN VKA IKA IKA R1 IREF VKA IKA(OFF) VKA VREF R2 VREF VKA = VREF x (1+R1/R2) + IREF x R1 SYMBOL Cathode (K) REF (R) Anode (A) 3 Advanced Power Electronics Corp. AP431 TYPICAL PERFORMANCE CHARACTERISTICS CATHODE CURRENT vs. CATHODE VOLTAGE CATHODE CURRENT vs. CATHODE VOLTAGE REFERENCE VOLTAGE vs. REFERENCE INPUT CURRENT vs. JUNCTION TEMPERATURE JUNCTION TEMPERATURE 4 Advanced Power Electronics Corp. AP431 MARKING INFORMATION SOT-23 Part Number : R1 R1SS Date Code : SS SS:2004,2008,2012… SS:2003,2007,2011… SS:2002,2006,2010… SS:2001,2005,2009… TO-92 Part Number 431T YWWS Date Code (YWWS) Y : Last Digit Of The Year WW : Weak S : Squence SO-8 Part Number Package Code 431M YWWSSS Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence SOT-89 Part Number Package Code 431G YWWS Date Code (YWWS) Y:Year WW：Week S：Sequence 5