LT1009

Features:

Maximum Initial Tolerance: 0.2%
Guaranteed Temperature Stability
Maximum 0.6W Dynamic Impedance
Wide Operating Current Range
Directly Interchangeable with LM136 for Improved Performance
No Adjustments Needed for Minimum Temperature Coefficient


Application

  Reference for 5V Systems
  8-Bit A/D and D/A Reference
  Digital Voltmeters
  Current Loop Measurement and Control Systems
Power Supply Monitor


Specifications

Parameter	Symbol	Ratings	Units
Repetitive Peak Reverse Voltage	VRRM	1200	V
Working Peak Reverse Voltage	VRWM	1200	V
DC Blocking Voltage	V R	1200	V
Average Rectified Forward Current (TC = 80oC)	I F(AV)	30	A
Repetitive Peak Surge Current (20kHz Square Wave)	I FRM	70	A
Nonrepetitive Peak Surge Current (Halfwave 1 Phase 60Hz)	I FSM	325	A
Power Dissipation	P D	166	W
Avalanche Energy (1A, 40mH)	E AVL	20	mJ
Operating and Storage Temperature Range	T J , TSTG	-55 to 150	°C
Maximum Temperature for Soldering Leads at 0.063in (1.6mm) from Case for 10s Package Body for 10s, See Application Note AN-7528	T L T PKG	300 260	°C °C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

Description

The LT®1009 is a precision trimmed 2.5V shunt regulator diode featuring a maximum initial tolerance of only ±5mV. The low dynamic impedance and wide operating current range enhances its versatility. The 0.2% reference tolerance is achieved by on-chip trimming which not only minimizes the initial voltage tolerance but also minimizes the temperature drift.

Even though no adjustments are needed with the LT1009, a third terminal allows the reference voltage to be adjusted ±5% to calibrate out system errors. In many applications, the LT1009 can be used as a pin-to-pin replacement of the LM136 and the external trim network eliminated.

For a lower drift 2.5V reference, see the LT1019 data sheet.