AHK432 Adjustable Low Voltage Shunt Regulator General Description Features The AHK432 is a low voltage adjustable shunt reference with thermal stability guaranteed over the full industrial temperature range. This three-terminal regulator has an output voltage range that extends from VREF (1.24V) to 20V, giving designers outstanding flexibility in the development of power supplies and instrumentation. With a low operating current of 60µA, the AHK432 is well suited for batterypowered portable electronic applications. It also has a sharp turn-on characteristic and a dynamic resistance of only 50mΩ, making it an excellent replacement for zener diodes in low tempco designs. • • • • • • PowerManager™ Wide Output Voltage Range (1.24V to 20V) Operating Current From 60µA to 100mA Low Dynamic Output Resistance of 50mΩ ±0.5% Trimmed Voltage Reference 10mV (Typical) VREF Deviation, From -40°C to +105°C Surface Mount 3- or 5-Pin SOT23 or ThroughHole 3-Pin TO-92 Package Applications The AHK432 is available in the Pb-free, surfacemount 3- or 5-pin SOT23, as well as the through hole TO-92. Three voltage tolerance options are offered in each package: ±0.5%, ±1%, and ±2%. • • • • • • • Adjustable and Programmable Supplies Global Voltage Reference for Multiple Power Supplies Instrumentation Isolated Feedback in Switching Power Supplies Linear Regulators (External Reference) Medical Electronics (see Endnote, page 10) Notebook Computers Typical Application IN RL OUT R1 Adjustable regulator: AHK432 R2 432.2005.11.1.3 OUT = VREF R1 + R2 R2 1 AHK432 Adjustable Low Voltage Shunt Regulator Pin Descriptions Pin Description SOT23-3 SOT23-5 TO-92 1 4 1 Reference. 2 3 3 Cathode. 3 5 2 Anode. N/A 1, 2 N/A Not internally connected. Pin Configuration SOT23-3 (Top View) Reference 1 3 Cathode 2 2 Anode SOT23-5 (Top View) N/C N/C Cathode 1 5 2 3 4 Anode Reference TO-92 (Top View) Reference 1 Anode 2 Cathode 3 432.2005.11.1.3 AHK432 Adjustable Low Voltage Shunt Regulator Absolute Maximum Ratings1 TA = 25°C, unless otherwise noted. Symbol VZ IZ IREF TJ TLEAD Description Value Units 20 100 3 -40 to 150 260 V mA mA °C °C Package Value Units TO-92 SOT23-3, SOT23-5 TO-92 SOT23-3, SOT23-5 160 410 780 300 Cathode Voltage Continuous Cathode Current Reference Current Operating Junction Temperature Range Maximum Soldering Temperature (at Leads) Thermal Characteristics Symbol Description ΘJA Maximum Thermal Resistance PD Maximum Power Dissipation °C/W mW 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time. 432.2005.11.1.3 3 AHK432 Adjustable Low Voltage Shunt Regulator Electrical Characteristics TA = 25°C, unless otherwise noted. AHK432 0.5% Symbol VREF VDEV ∆VREF/ ∆VZ IREF IREF(DEV) IZ(OFF) RZ IZ(MIN) 4 Description Conditions AHK432 1.0% AHK432 2.0% Min Typ Max Min Typ Max Min Typ Max Units VZ = VREF TA = 25°C 1.234 1.240 1.246 1.228 1.240 1.252 1.215 1.240 1.265 IZ = 10mA V 1.258 1.215 1.265 1.200 1.280 (test circuit 1) TA = -40 1.222 to +105°C TA = -40°C to +105°C, 10 25 10 25 10 25 mV VREF Temp VZ = VREF, IZ = 10mA Deviation (test circuit 1) Ratio of Change IZ = 10mA, -1.0 -2.7 -1.0 -2.7 -1.0 -2.7 mV/V in VREF to ∆VZ = 16V to VREF Change in (test circuit 2) Cathode Voltage Reference R1 = 10kΩ, R2 = ∞, 0.15 0.5 0.15 0.5 0.15 0.5 µA Input Current IZ = 10mA (test circuit 2) IREF Temp TA = -40°C to +105°C 0.1 0.4 0.1 0.4 0.1 0.4 µA Deviation R1 = 10kΩ, R2 = ∞, IZ = 10mA (test circuit 2) Off State VREF = 0V VZ = 6V 0.04 0.1 0.04 0.1 0.04 0.1 µA Cathode Current (test circuit 3) VZ = 16V 0.04 0.5 0.04 0.5 0.04 0.5 Dynamic f <1kHz, VZ = VREF, 0.05 0.2 0.05 0.2 0.05 0.2 Ω Output IZ = 100µA to 100mA Impedance (test circuit 1) Minimum VZ = VREF (test circuit 1) 60 80 60 80 60 80 µA Operating Current Reference Voltage 432.2005.11.1.3 AHK432 Adjustable Low Voltage Shunt Regulator Typical Characteristics Unless otherwise noted, TA = 25°C, IZ = 10mA. Cathode Current vs. Cathode Voltage Cathode Current vs. Cathode Voltage 200 Cathode Current (µA) Cathode Current (mA) 15 10 5 0 -5 -10 -15 150 100 50 0 -50 -100 -150 -200 -1 -0.5 0 0.5 1 1.5 -1 -0.5 0 Cathode Voltage ( V) 1.5 Reference Current vs. Temperature 180 IZ = 10mA 1.248 1.244 1.24 1.236 1.232 -50 -25 0 25 50 75 100 Reference Curre nt (nA) 1.252 Reference Voltage (V ) 1 Cathode Voltage (V) Reference Voltage vs. Temperature 160 IZ = 10mA R1 = 10kΩ R2 = Open 140 120 100 80 60 40 20 0 -50 125 -25 0 25 50 75 100 125 Junction Temperatur e (°C) Junction Temperature (°C) Ratio of ∆VREF / ∆VZ vs. Temperature Cathode Current vs. Temperature 80 0 VZ = 5V VREF = 0V (Off-state) 70 60 IZ = 10mA dVZ = VREF to 16V -100 Ratio (µV/V) Cathode Current (nA) 0.5 50 40 30 20 -200 -300 -400 -500 10 0 -600 -50 -25 0 25 50 75 Junction Temperature (°C) 432.2005.11.1.3 100 125 -50 -25 0 25 50 75 100 125 Junction Temperature (°C) 5 AHK432 Adjustable Low Voltage Shunt Regulator Typical Characteristics Unless otherwise noted, TA = 25°C, IZ = 10mA. Impedance vs. Frequency 10 16 Impedance (Ω) Normalized Impedance (%) Cathode Impedance vs. Temperature 12 8 4 1 0.1 0 0.01 1.E+01 -4 -50 -25 0 25 50 75 100 125 1.E+02 1.E+03 1.E+04 1.E+05 Frequency ( Hz ) Junction Temperature (°C) VOUT Gain (dB) Gain and Phase vs. Frequency 120 180 100 150 80 120 60 90 40 60 20 30 0 0 -20 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 -30 1.E+06 Frequency (Hz) VIN 169 Ω 13.7k AHK432 5V 8.25k Test Circuit for Voltage Gain and Phase Stability Boundary 1k 100 IZ Current (mA) 80 Stable R1=10k Stable 60 CL 40 AHK432 Unstable R2 20 VREF=VZ 0 10.E+0 100.E+0 1.E+3 10.E+3 100.E+3 Load Capacitance (pF) 6 1.E+6 10.E+6 Test Circuit for Stability 432.2005.11.1.3 AHK432 Adjustable Low Voltage Shunt Regulator Functional Block Diagram Symbol Diagram CATHODE CATHODE REF REF VREF=1.24V ANODE ANODE Test Circuits Test Circuit 1 OUT IN IZ Test Circuit 3 OUT IN OUT IN IZ IREF 432.2005.11.1.3 Test Circuit 2 IREF IZ(off) 7 AHK432 Adjustable Low Voltage Shunt Regulator Ordering Information1 Package Tolerance Bulk or Tape and Reel 0.5% 1.0% 2.0% N/A N/A N/A N/A N/A N/A AHK432ILY-.5-B1 AHK432ILY-1-B1 AHK432ILY-2-B1 AHK432IGY-.5-T1 AHK432IGY-1-T1 N/A AHK432IGV-.5-T1 AHK432IGV-1-T1 N/A AHK432ILY-.5-A1 AHK432ILY-1-A1 AHK432ILY-2-A1 SOT23-3 SOT23-5 Bulk TO92 SOT23-3 SOT23-5 Tape and Reel TO-92 Ammo All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor products that are in compliance with current RoHS standards, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. For more information, please visit our website at http://www.analogictech.com/pbfree. Package Information TO-92 (Bulk packing option) 3.705 ± 0.525 5° × 2 4.74 ± 0.47 1.27 12.7 BSC 0.15 0.38 0.80 ± 0.10 4.825 ± 0.505 0.38 5° All dimensions in millimeters. 1. Sample stock is generally held on part numbers listed in BOLD. 8 432.2005.11.1.3 AHK432 Adjustable Low Voltage Shunt Regulator TO-92 (Ammo packing option) 4.825 ± 0.505 12.8 0.38 × 3 4.74 ± 0.47 2.5 +0.4 -0.1 9.5 5° × 2 3.705 ± 0.525 0.38 5° × 4 SOT23-3 2.37 ± 0.27 1.30 ± 0.10 2.92 ± 0.12 0.95 BSC 4° ± 4° 0.14 ± 0.06 0.96 ± 0.21 0.86 ± 0.16 0.075 ± 0.075 1.90 BSC 0.40 ± 0.10 × 3 0.50 ± 0.10 0.54 REF All dimensions in millimeters. 432.2005.11.1.3 9 AHK432 Adjustable Low Voltage Shunt Regulator SOT23-5 2.85 ± 0.15 1.90 BSC 0.40 ± 0.10 0.075 ± 0.075 0.15 ± 0.07 4° ± 4° 10° ± 5° 1.10 ± 0.20 0.60 REF 1.20 ± 0.25 2.80 ± 0.20 1.575 ± 0.125 0.95 BSC 0.60 REF 0.45 ± 0.15 GAUGE PLANE 0.10 BSC All dimensions in millimeters. Endnote: LIFE SUPPORT POLICY AnalogicTech's PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF Advanced Analogic Technologies Inc. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. © Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. AnalogicTech warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with AnalogicTech’s standard warranty. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed. Advanced Analogic Technologies, Inc. 830 E. Arques Avenue, Sunnyvale, CA 94085 Phone (408) 737-4600 Fax (408) 737-4611 10 432.2005.11.1.3