UNISONIC TECHNOLOGIES CO., LTD M385
Preliminary LINEAR INTEGRATED CIRCUIT
MICROPOWER VOLTAGE REFERENCE
DESCRIPTION
The UTC M385 is a micropower voltage reference. This device features good temperature stability and extreme low dynamic impedance when it is operated over a 10μA to 20mA current. Low noise and good long-term stability are achieved because the UTC M385 bandgap reference applies only bipolar transistors and resistors. The UTC M385 can be used in almost any reference application due to the exceptional tolerance of capacitive loading. This voltage reference can be applied in portable meters, regulators, or general-purpose analog circuitry with battery life approaching shelf life. The wide dynamic operating range contributes to its use with widely varying supplies with excellent regulation. The low power drain of the UTC M385 is useful for micropower circuitry. On-chip trimming gives it the tight voltage tolerance. Furthermore, the wide operating current can replace older references with a tighter tolerance. The UTC M385 can be used in such applications, for example, portable and battery-powered equipment, instrumentation, process control, energy management, product testing, automotive, precision audio components, and so on.
FEATURES
* Initial tolerance: 1% * Operating current range:10μA~20mA * Low temperature coefficient * Low voltage reference
ORDERING INFORMATION
Ordering Number Lead Free Halogen Free M385L-xx-S08-R M385G-xx-S08-R xx: Output Voltage, refer to Marking Information. Package SOP-8 Packing Tape Reel
Note:
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QW-R101-028.c
M385
PACKAGE
Preliminary
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
VOLTAGE CODE MARKING
SOP-8
12: 1.2V 25: 2.5V
G: Halogen Free L: Lead Free Voltage Code
UTC M385 XX
Date Code Lot Code
PIN CONNECTIONS
NC 1 NC 2 NC 3 4
8+ 7 NC 6 NC
5 NC
PIN DESCRIPTIONS
PIN NO. 1 2 3 4 5 6 7 8 PIN NAME NC NC NC NC NC NC + PIN FUNCTION Not connected Not connected Not connected Pin-sources current for normal application, the current value is the same as Pin+ Not connected Not connected Not connected Sinks current with a range from 20μA to 20mA for normal applications, a stable positive voltage, relative to Pin-, occurs on Pin-
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R101-028.c
M385
BLOCK DIAGRAM
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 6
QW-R101-028.c
M385
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNIT Reverse Current IR 30 mA Forward Current IF 10 mA Junction Temperature TJ 125 °C Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -65 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified.)
M385-1.2V PARAMETER Reverse Breakdown Voltage Reverse Breakdown Voltage Charge with Current Reverse Dynamic Impedance Minimum Operating Current Wideband Noise Average Temperature Coefficient Long Term Stability M385-2.5V PARAMETER Reverse Breakdown Voltage Reverse Breakdown Voltage Charge with Current Reverse Dynamic Impedance Minimum Operating Current Wideband Noise Average Temperature Coefficient Long Term Stability SYMBOL VR ΔVR ZR IR(MIN) eN αVR ΔVR Δt CONDITIONS IR=100μA 10μA
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