TS12001

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© 2014 Silicon Laboratories, Inc. All rights reserved.

FEATURES

 Nanopower Voltage Detector in Single 4 mm 2 Package  Ultra Low Total Supply Current: 1µA (max)  Supply Voltage Operation: 0.65V to 2.5V  Preset 0.78V UVLO Trip Threshold  Internal ±10mV Hysteresis  Resettable Latched Comparator  Complimentary and Open-drain Comparator Outputs  Separate Comparator Output Supply Pin

APPLICATIONS

CPU, Microprocessor, and Logic Reset Controller Battery-powered Systems

DESCRIPTION

The TS12001 voltage detector combines a 0.58V reference and a comparator with resettable comparator latch in a single package. The TS12001 operates from a single 0.65V to 2.5V power supply and consumes less than 1µA total supply current. Optimized for ultra-long life operation, the TS12001 expands the growing “NanoWatt Analog™” high- performance analog integrated circuits portfolio. The voltage detector exhibits a preset UVLO threshold voltage of 0.78V (typ) or can be set to other threshold voltages with two external resistors. The comparator exhibits ±10mV of internal hysteresis for clean, chatter-free output switching. The TS12001 also offers both push-pull and open-drain outputs. When compared against similar products, the TS12001 offers a factor-of-2 lower power consumption and at least a 33% reduction in pcb area. The TS12001 is fully specified over the -40°C to +85°C temperature range and is available in a low- profile, 10-pin 2x2mm TDFN package with an exposed back-side paddle. A 0.65V/1µA Nanopower Voltage Detector with Dual Outputs TYPICAL APPLICATION CIRCUIT A Nanopower 1.8V Core System Voltage Detector

Page 2 TS12001 Rev. 1.0 ABSOLUTE MAXIMUM RATINGS Input Voltage Output Voltage Output Current Short-Circuit Duration Continuous Power Dissipation (TA = +70°C) Electrical and thermal stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the op erational sections of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may affect device reliability and lifetime. PACKAGE/ORDERING INFORMATION ORDER NUMBER PART MARKING CARRIER QUANTITY TS12001ITD1022 AAN Tape & Reel ----- TS12001ITD1022T Tape & Reel 3000 Lead-free Program: Silicon Labs supplies only lead-free packaging. Consult Silicon Labs for products specified with wider operating temperature ranges.

TS12001 Rev. 1.0 Page 3

ELECTRICAL CHARACTERISTICS

VIN = OVDD = 0.8V; VSS = 0V; VSET = VSS; VCOUTPP = HiZ; VCOUTOD = HiZ; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. See note 1. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V IN 0.65 2.5 V Supply Current I IN REFOUT = open TA = +25°C 0.8 µA -40°C ≤ TA ≤ 85°C 1 UVLO Output Driver Supply Voltage OV DD 0.65 2.5 V Output Driver Supply Current I ODD 0.1 µA Preset UVLO Trip Point VIN falling until COUTPP switches LOW 725 761 797 mV VIN rising until COUTPP switches HIGH 743 781 818 SET Trip Point V SET falling until COUTPP switches LOW TA = +25°C 540 567 595 -40°C ≤ TA ≤ 85°C 534 604 V SET rising until COUTPP switches HIGH TA = +25°C 560 587 615 -40°C ≤ TA ≤ 85°C 550 620 SET Trip Response Time V SET rising 13 µs VSET falling 10 Preset UVLO Trip Hysteresis ±10 mV SET Enable Threshold See Note 2 90 mV SET Input Leakage V SET = VSS; VSET = VIN 20 nA LHDETതതതതതതതതതത Input Low Voltage VIL Comparator Latched Output Enabled LHDETതതതതതതതതതത Input High Voltage VIH Comparator Latched Output Disabled LHDETതതതതതതതതതത Input Leakage VLHDETതതതതതതതതതത = VSS; VLHDET ത തതതതതതതതത = 5.5V 100 nA Reference Output Voltage VREF TA = +25°C 555 577 600 mV -40°C ≤ TA ≤ 85°C 552 602 Reference Load Regulation I OUT = ±100nA 0.5 % Output High Voltage V OH COUTPP; I OUT = -100μA V IN – 0.1 V Output Low Voltage V OL COUTPP; I OUT = 100μA VSS + 0.1 V Output Low Voltage V OL COUTOD; I OUT = 100μA VSS + 0.11 V Output Short- Circuit Current, I SC Sourcing; VCOUTPP = VSS 0.1 mA Sinking; VCOUTPP = VIN 0.5 mA Sinking; VCOUTOD = VIN 1.4 mA Open Drain Leakage COUTOD; V COUTOD = 5V 20 nA Note 1: All devices are 100% production tested at TA = +25°C and are guaranteed by characterization for TA = TMIN to TMAX, as specified. Note 2: A SET voltage above this threshold voltage enables the SET pin voltage to control the comparator output.

Page 4 TS12001 Rev. 1.0 TYPICAL PERFORMANCE CHARACTERISTICS VIN = OVDD = 2.5V; VSS = 0V; VSET = VSS; VCOUTPP = HiZ; VCOUTOD = HiZ, unless otherwise noted. Typical values are at TA = +25°C. SUPPLY VOLTAGE - Volt SUPPLY CURRENT - µA 1.02 1.39 0.6 0.4 Supply Current vs Supply Voltage and Temperature 0.65 1.76 0.7 0.8 0.5 2.13 2.5 SINK CURRENT - mA VOL - V 1 2 0.1 0.4 COUTPP Output Voltage Low vs Sink Current 0 3 0.2 0.3 TEMPERATURE - ºC SET THRESHOLD VOLTAGE - V 0.585 0.575 0.6 SET Threshold Voltage vs Temperature 0.59 0.595 0.58 SOURCE CURRENT - mA VIN - VOH - V 0.2 COUTPP Output Voltage High vs Source Current 0.3 0.4 0.1 0.5 1 2 0 3 4 TEMPERATURE - ºC REFERENCE VOLTAGE - V -15 10 0.584 0.582 Reference Voltage vs Temperature -40 35 0.586 60 85 0.588 0.59 0.592 -15 10 -40 35 60 85 0.6 TA = +85ºC TA = +25ºC TA = -40ºC Low-to-High High-to-Low SUPPLY VOLTAGE - V SHORT-CIRCUIT CURRENT - mA 1.5 0.5 COUTOD Short-Circuit Current vs Supply Voltage 2.5 VCOUTOD = VIN

TS12001 Rev. 1.0 Page 5 COUTPP Transient Response with LHDETതതതതതതതത VIN = OVDD = 2.5V, CLOAD = 15pF 500µs/DIV SET 500mV/DIV TYPICAL PERFORMANCE CHARACTERISTICS VIN = OVDD = 2.5V; VSS = 0V; VSET = VSS; VCOUTPP = HiZ; VCOUTOD = HiZ, unless otherwise noted. Typical values are at TA = +25°C. LHDETതതതതതതതത 2V/DIV COUTPP 2V/DIV COUTPP Power-Up Transient Response VSET = 2.5V, CLOAD = 15pF 100ms/DIV VIN 1V/DIV OUTPUT 1V/DIV SUPPLY VOLTAGE - V SHORT-CIRCUIT CURRENT - mA COUTPP Short-Circuit Current vs Supply Voltage VCOUTPP = VSS SUPPLY VOLTAGE - V SHORT-CIRCUIT CURRENT - mA COUTPP Short-Circuit Current vs Supply Voltage VCOUTPP = VIN

Page 6 TS12001 Rev. 1.0 PIN FUNCTIONS PIN NAME FUNCTION 1 VIN Positive Supply Voltage. Connect a 0.1µF bypass capacitor from this pin to analog VSS/GND.

2 SET

External UVLO Trip Threshold Set Pin. When this pin is set to VSS, the internal preset 0.78V UVLO trip threshold controls the comparator output. When the applied voltage to this pin is higher than 90mV, the SET pin sets the trip threshold and controls the comparator output. If the SET pin is not used, connect the pin to to VSS.

3 NC No Connection

4 VSS Negative Supply Voltage.

5 LHDETതതതതതതതതതത

Latch Enable Pin. When LHDETതതതതതതതതതത is set HIGH, the outputs of the comparator will toggle normally based on the inputs to the comparator. When LHDETതതതതതതതതതത is set LOW and COUTPP is HIGH, COUTPP will remain HIGH despite any changes to the input of the comparator. COUTPP will once again respond to changes to the input when LHDETതതതതതതതതതത is toggled HIGH. If COUTPP is initially LOW and the LHDETതതതതതതതതതത is then LOW, COUTPP will stay LOW. If a LOW-to-HIGH transition occurs on COUTPP, COUTPP will switch to HIGH and stay HIGH and not respond to any changes at the input. The LHDETത തതതതതതതതത pin must always be set to a known state. For unlatched comparator operation, set LHDETതതതതതതതതതത to HIGH. The open-drain output (COUTOD) is the inverted version of the COUTPP output. 6 REFOUT 0.58V Reference Output

7 NC No Connection

8 COUTOD Comparator Open-Drain Output

9 COUTPP Comparator Push-Pull Output

10 OVDD Output Driver Positive Supply Voltage. Connect a 0.1µF bypass capacitor from this pin to analog VSS/GND. EP ---- Exposed paddle is electrically connected to VSS/GND.

TS12001 Rev. 1.0 Page 7 BLOCK DIAGRAM THEORY OF OPERATION The TS12001 combines a 0.58V ±4.5% reference and an analog comparator with a resettable comparator latch in a single package. The TS12001 operates from a single 0.65V to 2.5V power supply and consumes less than 1µA total supply current. The TS12001 comparator has a push-pull and open- drain output driver. The push-pull output driver is powered from a separate supply voltage, OV DD. The open-drain output stage allows for easy output voltage level translation as may be required when driving systems powered with a different power supply rail. The analog comparator exhibits ±10mV of internal hysteresis for clean, chatter-free output switching. The internal reference was designed to sink or source up to 0.1µA load currents. The TS12001 has a preset UVLO threshold voltage of 0.78V (typ) or can be set to other threshold voltages with two external resistors where the divided voltage is applied to the SET pin. When the SET pin voltage is grounded or it is less than approximately 90mV, the internal preset UVLO threshold circuit will control the comparator outputs. If the SET pin is above approximately 90mV, the external voltage divider circuit will control the comparator outputs. The 0.58V reference voltage is tied to the inverting input of the comparator and the output of a switch is connected to the non-inv erting input of the comparator. The output of the switch is either the SET voltage or the internal UVLO threshold voltage, depending on whether the SET pin voltage is above or below approximately 90mV. If the switch output is above 0.58V, the push-pull output (COUTPP) will be HIGH and the open-drain output (COUTOD) will be LOW and vice versa. For proper operation, the supply voltage V IN must be applied before the output driver supply voltage (OVDD) is applied. The TS12001 has a latch enable pin (LHDETതതതതതതതതതത) that

LHDETതതതതതതതതതത pin offers a LOW-to-HIGH detection. operation or to VSS for LHDETതതതതതതതതതത enable. unconnected and should be tied to VSS. Table 1. Resistor Combinations for Several V IN 0.75µA of current when VCORE = 1.8V.

Silicon Laboratories, Inc. Page 10 400 West Cesar Chavez, Austin, TX 78701 TS12001 Rev. 1.0 +1 (512) 416-8500 ▪ www.silabs.com PACKAGE OUTLINE DRAWING Patent Notice Silicon Labs invests in research and development to help our customers differentiate in the market with innovative low-power, small size, analog-intensive mixed-signal solutions. Silicon Labs' extensive patent portfolio is a testament to our unique approach and world-class engineering team. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where personal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. 10-Pin TDFN22 Package Outline Drawing (N.B., Drawings are not to scale)

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