Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsVoltage RegulatorsTS4041CILT-1.2

August 2007 Rev 2 1/9

TS4041

1.225V micropower shunt voltage reference

Features

■ 1.225V typical output voltage

■ Ultra low operating current: 65µA maximum at

25°C

■ High precision @ 25°C

–+/- 2%

–+/- 1%

– +/- 0.5%

■ High stability when used with capacitive loads

■ Industrial temperature range: -40°C to +85°C

■ 150ppm/°C maximum temperature coefficient

Application

■ Computers

■ Instrumentation

■ Battery chargers

■ Switch mode power supply

■ Battery operated equipments

Description

The TS4041 is a low power shunt voltage

reference providing a stable 1.225V output

voltage over the industrial temperature range

(-40°C to +85°C). Availabe in SOT23-3 surface

mount package, it can be designed in applications

where space saving is critical.

The low operating current is a key advantage for

power restricted designs. In addition, the TS4041

is very stable and can be used in a broad range of

application conditions.

SOT23-3L

(Plastic micropackage)

Pin connections

(Top view)

www.st.com

Summary of content (9 pages)

PAGE 1
TS4041 1.225V micropower shunt voltage reference Features ■ 1.225V typical output voltage ■ Ultra low operating current: 65µA maximum at 25°C ■ High precision @ 25°C – +/- 2% – +/- 1% – +/- 0.
PAGE 2
Absolute maximum ratings and operating conditions 1 TS4041 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol Parameter Value Unit Ik Reverse breakdown current 20 mA If Forward current 10 mA 360 mW -65 to +150 °C 2 kV 200 V 260 °C (1) Pd Power dissipation Tstg Storage temperature Human body model SOT23-3 (HBM)(2) ESD Machine model (MM) Tlead (3) Lead temperature (soldering, 10 seconds) 1.
PAGE 3
TS4041 Electrical characteristics 2 Electrical characteristics Table 3. TS4041E (2% precision) Tamb = 25°C (1) (unless otherwise specified) Symbol Parameter Typ. Max. 1.22 5 Ik = 100μA 1.20 0 Reverse breakdown voltage tolerance Ik = 100μA -40°C < Tamb < +85°C -25 -36 Minimum operating current ΔVref/ΔT Average temperature coefficient ΔVk/ΔIk Min. Reverse breakdown voltage Vk Ik-min Test conditions Reverse breakdown voltage change with operating current range Tamb = 25°C 40 Unit 1.
PAGE 4
Electrical characteristics Table 5. Symbol TS4041C (0.5% precision) (1) Tamb = 25°C (unless otherwise specified) Parameter Min. Typ. Max. 1.22 5 Ik = 100μA 1.21 9 Reverse breakdown voltage tolerance Ik = 100μA -40°C < Tamb < +85°C -6 -16 Minimum operating current ΔVref/ΔT Average temperature coefficient ΔVk/ΔIk Test conditions Reverse breakdown voltage Vk Ik-min TS4041 Reverse breakdown voltage change with operating current range Tamb = 25°C 40 Unit 1.
PAGE 5
TS4041 Electrical characteristics Figure 1. Reference voltage versus cathode current Figure 2. 100 8 Cathode current (µA) Cathode current (mA) 12 Reference voltage versus cathode current 4 0 -4 50 0 -8 -50 -1 0 -0.5 0.5 1 -1 1.5 -0.5 0 1 0.5 Reference voltage (V) Reference voltage (V) Figure 3. Test circuit Figure 4. 1.5 Reference voltage versus temperature 1.26 +2% 1.25 Ik=(Vin-Vref)/R Vout=Vref Cathode voltage (V) R +1% +0.5% 1.24 1.23 1.22 1.21 -0.5% -1% 1.2 1.
PAGE 6
Package information Figure 7. TS4041 Pulse response for Ik=100µA Figure 8. Test circuit for pulse response at Ik=100µA 3V 18 KΩ Ik=100µA 1.225V Output 0V 0 Intput Pulse Generator Output Input 0V 2 4 6 8 10 Time (µs) Figure 9. Pulse response for Ik=1mA Figure 10. Test circuit for pulse response at Ik=1mA 3V Input 1.8 KΩ Ik=1mA 1.
PAGE 7
TS4041 Package information Figure 11. SOT23-3 package mechanical data Dimensions Ref. Millimeters Min. Typ. Mils Max. Min. Typ. Max. A 0.890 1.120 35.05 44.12 A1 0.010 0.100 0.39 3.94 A2 0.880 1.020 34.65 b 0.300 0.500 11.81 19.69 C 0.080 0.200 3.15 7.88 D 2.800 3.040 110.26 E 2.100 2.64 82.70 E1 1.200 1.400 47.26 0.950 2.900 1.300 37.41 114.17 51.19 0.950 37.41 e1 1.900 74.82 0.400 L1 k 0.600 15.75 0.540 0° 119.72 103.96 e L 40.17 55.13 23.
PAGE 8
Ordering information 4 Ordering information Table 6. 5 Order codes Part number Precision TS4041EILT-1.2 2% TS4041DILT-1.2 1% TS4041CILT-1.2 0.5% Temperature range Package Packing Marking L233 -40°C to +85°C SOT23-3 Tape & reel L232 L231 Revision history Table 7. 8/9 TS4041 Document revision history Date Revision Changes 21-Mar-2002 1 Initial release. 20-Aug-2007 2 Removed TO-92 package information. Format update.
PAGE 9
TS4041 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.