SS2432G SSC | Alldatasheet
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Technical content
www.SiliconStandard.com 1 of 6 Cathode 1 Reference 1 SS2432G Dual Adjustable Precision Shunt Regulator PIN CONFIGURATION The SS2432G consists of a pair of low-voltage adjustable shunt regulators with a guaranteed thermal stability over the applicable temperature range. The output voltage can be set to any value between VREF (approximately 1.25V) to 12V with two external resistors (see application circuit). This device has a typical output impedance of 0.25 ohms. Active output circuitry provides very sharp turn-on characteristics, making this device an excellent replacement for Zener diodes in many applications. The SS2432G is characterized for operation from 0°C to 105°C.
DESCRIPTION
Low voltage operation (1.25V) Adjustable output voltage from VO = V REF to 12V Wide operating current range from 55uA to 100mA Low dynamic output impedance 0.25Ω typ. ESD rating is 6kV (per MIL-STD 883D) Linear Regulators Adjustable Supplies Switching Power Supplies Battery Operated Computers Instrumentation Computer Disk Drives
FEATURES
APPLICATIONS
The device is supplied in a SOT23-6 package. Pin 1 : Cathode 1 Pin 2 : Common Anode Pin 3 : Cathode 2 Pin 4 : Reference 2 Pin 5 : Common Anode Pin 6 : Reference 1 Reference 1 Anode Reference 2 Cathode 2 Anode Cathode 1 1 3 2 5 6 4 1/14/2005 Rev.2.10 Pb-free lead finish (second-level interconnect).
www.SiliconStandard.com 2 of 6 SS2432G Parameter Symbol Maximum Units Cathode Voltage VKA 12 V Continuous Cathode Current IKA 150 mA Reference Current IREF 3 mA Operating Junction Temperature T j 150 °C Storage Temperature Range T STG -45 to +150 °C Thermal Resistance θJA 160 °C/W Lead Temperature (Soldering - std.lead finish) TLEAD 260°C/10 sec. PARAMETER SYMBOL TEST CIRCUIT TEST CONDITIONS MIN TYP MAX /G12/G13/G11/G0A/G06 1% Vref 1Reference voltage VKA = Vref IKA = 10mA 1.228 1.240 1.252 V Deviation of reference voltage over full temperature range VI(dev) 1 TA = full range /G03 VKA = Vref, IKA = 10mA 4 12 mV Ratio of change in reference voltage to the change in cathode voltage ΔVref Δ VKA
2 I KA = 10mA, Δ
VKA = Vref to 12V -1.5 -2.7 mV/V Reference current Iref 2 IKA = 10mA, R1 = 10kΩ , R2 = ∞ 0.15 0.5 µA Deviation of reference current over full temperature range II(dev) 2 IKA = 10mA, R1 = 10kW, R2 = ∞ /G03 TA = full range 0.05 0.30 µA Minimum cathode current for regulation Imin 1 VKA = Vref 55 80 µA Off-state cathode current Ioff 3 VKA = 12V, Vref = 0 0.001 0.1 µA Dynamic impedance |ZKA| 1 IKA = 100µA to 100mA, V KA = Vref ‹ f ≤ 1kHz 0.25 0.4 Ω ABSOLUTE MAXIMUM RATINGS over ambient temp. range. ELECTRICAL CHARACTERISTICS (TA =25°C) 1/14/2005 Rev.2.10
www.SiliconStandard.com 3 of 6 SS2432G 1/14/2005 Rev.2.10 TYPICAL PEFORMANCE CHARACTERISTICS CATHODE CURRENT Vs. CATHODE VOLTAGE Cathode Current (mA) Cathode Voltage (V) CATHODE CURRENT Vs. CATHODE VOLTAGE Cathode Current (µA) Cathode Voltage (V) REFERENCE VOLTAGE Vs. JUNCTION TEMPERATURE /G11/G07/G12/G07/G0A/G07/G0B/G13/G07/G08/G14/G05/G15/G03/G02/G16/G07/G08/G0C/G0D/G14/G0F/G08 /G1C/G20/G21/G22/G12/G23/G14/G21/G01/G04/G16/G24/G25/G16/G26/G11/G12/G20/G26/G16/G01/G19/G01/G01/G02/G1A/G01 REFERENCE INPUT CURRENT Vs. JUNCTION TEMPERATURE /G11/G07/G12/G07/G0A/G07/G0B/G13/G07/G08/G01/G09/G0A/G0A/G07/G0B/G03/G08/G0C/G0B/G0E/G0F/G08 /G1C/G20/G21/G22/G12/G23/G14/G21/G01/G04/G16/G24/G25/G16/G26/G11/G12/G20/G26/G16/G01/G19/G01/G01/G02/G1A/G01 /G01/G02/G03/G03 /G01/G04/G05 /G01/G05/G03 /G01/G06/G05 /G03 /G06/G05 /G05/G03 /G04/G05 /G02/G03/G03 /G02/G06/G05 /G02/G05/G03 /G01/G06/G01/G02/G03/G02/G06 V KA= Vref TA = 25°C /G01/G02/G03/G03 /G01/G04/G03/G03 /G03 /G04/G03/G03 /G02/G03/G03 /G05/G03/G03 /G06/G03/G03 /G07/G03/G03 /G01 /G04/G03/G04/G02 VKA = Vref TA = 25°C /G02/G06/G03/G03 /G02/G06/G02/G03 /G02/G06/G06/G03 /G02/G06/G07/G03 /G02/G06/G08/G03 /G02/G06/G05/G03 /G02/G06/G09/G03 /G01/G06/G03/G03/G06/G03/G08/G03/G09/G03/G0A/G03/G02/G03/G03/G02/G06/G03 /G01/G02/G03/G04/G05/G06/G07/G08 /G01/G02/G03/G09/G05µ/G09/G08 /G01 /G02/G01/G01 /G03/G01/G01 /G04/G01/G01 /G05/G01/G01 /G06/G01/G01/G01 /G07/G02/G01/G01/G02/G01/G03/G01/G04/G01/G05/G01/G06/G01/G01/G06/G02/G01 /G0A/G04/G08/G03/G08/G04/G05/G0B/G08 /G0A/G0C/G08/G03/G08/G09 /G01/G0D/G07/G03/G04/G05/G06/G07
www.SiliconStandard.com 4 of 6 SS2432G /G01 /G0D/G01/G02/G03 /G01/G02/G03/G04/G05 /G0E/G0D /G01/G0E/G0D /G0A/G01/G02 /G0A/G0B/G0C/G0D /G0E/G0F/G10/G11/G12 /G0E/G01/G02 /G0E/G0B/G0C/G0D /G0E/G0F /G0E/G10 /G0D/G01/G02/G11/G0D/G01/G02/G03/G04/G12/G0F/G13/G04/G0E/G0F/G14/G0E/G10/G04/G15/G04/G13/G04/G16/G01/G02/G03/G04/G17/G04/G0E/G0F /G01/G01/G02/G03/G04/G05 /G01/G02 /G01/G02/G03/G03 /G02/G03/G04/G05/G01/G06/G07/G08/G09/G0A/G07/G05/G01/G0B/G0C/G01 /G0D/G0A/G08/G04/G0E/G01/G0D/G08/G03/G0F/G01 /G02/G03/G04/G05/G01/G06/G07/G08/G09/G0A/G07/G05/G01/G10/G0C/G01 /G0D/G0A/G08/G04/G04/G11/G01/G0D/G08/G03/G0F/G01 /G02/G03/G04/G05/G01/G06/G07/G08/G09/G0A/G07/G05/G01/G12/G0C/G01 /G13/G0F/G0F/G01/G14/G05/G15/G05/G03/G01/G06/G0A/G08/G08/G03/G16/G05/G01
APPLICATION INFORMATION
VDEV = VMAX-VMIN VMIN TEMPERATURE Deviation of reference input voltage, V DEV, is defined as the maximum variation of the reference input voltage over the full temperature range. The average temperature coefficient of the reference in- put voltage, α VREF is defined as: T1 T2 25°C)(atV V T1 T2 610 25°C) (atV V-V C ppmV REF DEV REF MINMAX REF =°Δ Where: T2− T1=full temperature change. α VREF can be positive or negative depending on whether the slope is positive or negative. Example: VDEV= 12.0mV, VREF= 1240mV, T2− T1= 105°C, slope is negative. 92ppm/°CV 105°C 610 1240 mV 12.0mV REF − = Note 4. The dynamic output impedance, Rz, is de- fined as: RZ = Z ZV IΔ Δ When the device is programmed with two external r e- sistors, R1 and R2, (see Fig. 2), the dynamic output impedance of the overall circuit, is defined as: [ ] R11RzI Vzr +≅Δ 1/14/2005 Rev.2.10
www.SiliconStandard.com 5 of 6 R1A R2A R2B R1B VIN Output turns ON when Low Limit <VIN < High Limit + VBE SS432 SS432 R4 R5 Low Limit≅ VREF ( 1+ R1B/ R2B )+ VBE High Limit ≅ VREF ( 1+ R1A/ R2A ) Over-Voltage/Under-Voltage Protection Circuit RCL IOUT VIN SS432 R VIN S SS432 IOUT=VREF/ RCL IOUT=VREF /RS Current Limiter or Current Source Constant-Current Sink VOUT VIN SS432 RIN VIN VOUT FUSE SS432 VOUT ≅ (1+R1/R2) x VREF VLIMIT ≅ (1+R1/R2) x VREF Higher-Current Shunt Regulator Crow Bar APPLICATION EXAMPLES SS2432G 1/14/2005 Rev.2.10
www.SiliconStandard.com 6 of 6 Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard Corporation makes no guarantee or warranty, expre ss or implied, as to the reliability, accuracy, timeliness or completeness of such information and assumes no responsibility for its use, or for infringement of any patent or other intellectual property rights of third parties that may result from its use. Silicon Standard reserves the right to make changes as it deems necessary to any products described herein for any reason, including without limitation enhancement in reliability, functionality or design. No license is granted, whether expressly or by implication, in relation to the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of Silicon Standard Corporation or any third parties. SS2432G 1/14/2005 Rev.2.10 PACKAGE DIMENSIONS