Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features z Description Precision supply-voltage monitor The PT7M7803/09/10 are microprocessor (P) - 4.63V (PT7M7803/09/10L) supervisory circuits used to monitor the power supplies - 4.26V (PT7M7803/09/10M) in P and digital systems. They provide excellent circuit - 3.08V (PT7M78003/09/10T) reliability and low cost by eliminating external - 2.93V (PT7M78003/09/10S) components and adjustments when used with +3.3V, - 2.63V (PT7M7803/09/10R) +3.0V, or 2.5V powered circuits. - 2.32V (PT7M7803/09/10Z) z 140ms(min) reset pulse width z Push-Pull These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines /RESET Output Configurations for RESET Output Configurations for configuration for below a preset threshold, keeping it asserted for at least PT7M7809 z Push-Pull 140ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of PT7M7810 z Open-Drain supply voltages are available. /RESET output The PT7M7803 has an open-drain output stage, PT7M7803 while the PT7M7809/10 have push-pull outputs. The z 12A Supply Current z Guaranteed Reset(/Reset) Valid to VCC = +1.0V z Power Supply Transient Immunity z No External Components PT7M7803's open-drain /Reset output requires a pull-up resistor that can be connected to a voltage higher than VCC. The PT7M7803/09 have an active-low /RESET output while the PT7M7810 has an active-high RESET Ordering Information Part Number output. The reset comparator is designed to ignore fast Package PT7M7803XTE Lead free and Green SOT23-3 PT7M7809XTE Lead free and Green SOT23-3 PT7M7809XTE Lead free and Green SOT23-3 transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the PT7M7803/09/10 Note: "x" refers to voltage range, see below table. ideal for use in portable equipment. The ICs are available in 3 pin SOT23 packages. Suffix: X--Monitored Voltage X L Reset Threshold (V) 4.63 M 4.26 T 3.08 S 2.93 R 2.63 Z 2.32 Block Diagram VCC Reset Logic and Timer + - RESET VRST PT0249(08/09) Ver: 8 1 Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Configuration PT7M7803/09/10XT 1 GND VCC 2 3 RESET SOT23-3 Pin Description Pin Type Description VCC - Supply Voltage. Reset is asserted when VCC drops below the Reset Threshold Voltage (VRST). Reset remains asserted until VCC rises above VRST and keep asserted for the duration of the Reset Timeout Period (tRS) once VCC rises above VRST. GND - Ground RESET O Active-Low Reset Output (Push-Pull). It goes low when Vcc is below the reset threshold. It remains low for about 200ms after Vcc rises above the reset threshold (VRST). Functional Description Reset Output A microprocessor (P) reset input starts the P in a known state. Whenever the P is in an unknown state, it should be held in reset. The supervisory circuits assert reset during power-up and prevent code execution errors during power-down or brownout conditions. On power-up, once Vcc reaches about 1.0V, /RESET is a guaranteed logic low of 0.4V or less. As Vcc rises, /RESET stays low. When Vcc rises above the reset threshold, an internal timer releases /RESET after about 200ms. /RESET pulses low whenever Vcc drops below the reset threshold, i.e. brownout condition. If brownout occurs in the middle of a previously initiated reset pulse, the pulse continues for at least another 200ms. On power-down, once Vcc falls below the reset threshold, /RESET stays low and is guaranteed to be 0.4V or less until Vcc drops below 1.0V. Reset Timing Diagram shows the timing relationship. PT0249(08/09) Ver: 8 2 Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Typical Application Circuit PT0249(08/09) Ver: 8 3 Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Maximum Ratings Storage Temperature ............................................................-65oC to +150oC Ambient Temperature with Power Applied.......................... -40oC to +85oC Supply Voltage to Ground Potential (Vcc to GND) ..............-0.3V to +6.0V DC Input Voltage (All inputs except Vcc and GND)......-0.3V to VCC+0.3V DC Output Current (All outputs) ..........................................................20mA Power Dissipation .............................................................................. 320mW Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Recommended Operation Conditions Sym VCC Description Supply Voltage for 7803/09/10(L/M) Supply Voltage for 7803/09/10(T/S) Supply Voltage for 7803/09/10(R/Z) Test Conditions - Min 4.5 3.0 2.7 Typ 5.0 3.3 3.0 Max 5.5 5.5 5.5 Unit V V V Operating Temperature - -40 - 85 TA PT0249(08/09) Ver: 8 4 Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| DC Electrical Characteristics (VCC = VRN + 5% to 5.5V, TA= -40~85C, unless otherwise noted.)(Note 1) Symbol VCC ICC ICC VRST VRTH) Description Test Conditions Operating Voltage Range Supply Current Supply Current Threshold Voltage(Fallingedge)(Note 2) Min Typ Max Unit 1.0 - 10 10 5.5 30 30 V VRN -1.1% VRN VRN +1.1% VRN - 1.5% VRN VRN + 1.5% Vcc < 5.5V, PT7M78xxL/M Vcc < 3.6V, PT7M78xxR/S/T/Z TA= 25C PT7M7809M All except 7809M TA= -40 ~ 85C PT7M7809M VRN - 1.8% VRN VRN + 2% TA= -40 ~ 85C All except 7809M VRN - 2.5% VRN VRN + 2.5% PT7M7809M 4.232 4.31 4.396 VRTH Threshold Voltage(Risingedge) (Note 2) TA= -40 ~ 85C VRTH Reset Threshold Hysteresis (Note 2) Vcc varies between VRN 5% (Only for 78xxL/M) - 50 - Vcc 4.5V Isource=800A Vcc-1.5 - - Vcc 2.7V Isource=500A 0.8xVcc - - Vcc 1.8V Isource=150A 0.8xVcc - - Vcc 1.0V Isource=4A 0.8xVcc - - Vcc 4.5V Isink=3.2mA - - 0.4 Vcc 2.7V Isink=1.2mA - - 0.3 VOH VOL Output High Voltage Output Low Voltage A V mV V V 0.3 Vcc 1.0V Isink=100A Note: 1. Parameters of room temperature guaranteed by production test and parameters of full-temperature guaranteed by design. 2. VRST is Reset threshold voltage when VCC falls from high to low level. VRN is nominal reset threshold voltage. AC Electrical Characteristics Symbol Description Test Conditions tRS Reset Pulse Width Min Typ Max - 78xxT/S/R/Z 140 240 560 TA= 25C 78xxL/M 140 200 280 Unit ms Reset Timing Diagram VCC VRST VRST + VRTH tRS RESET PT0249(08/09) Ver: 8 5 Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Mechanical Information TE (Lead free and Green SOT23-3) X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS Note: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC TO-236H PT0249(08/09) Ver: 8 6 Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Marking Information AA LJ DATE CODE YEAR & WORK WEEK PART NO. 2 BIT CODE (See Below Table) Example: AAPJ No. 1 2 3 4 5 6 PART NO.: PT7M7809LT DATE CODE: YEAR 2005 WW10 Part No. PT7M7809L PT7M7809M PT7M7809T PT7M7809S PT7M7809R PT7M7809Z Code AA AB AC AD AE AF No. 7 8 9 10 11 12 AAPJ Part No. PT7M7803L PT7M7803M PT7M7803T PT7M7803S PT7M7803R PT7M7803Z PT0249(08/09) Lead-Free Sign -: lead-free PART NO.: PT7M7809LTE DATE CODE: YEAR 2005 WW10 Lead -free package Code BC BD BE BF BG BH No. 13 14 15 16 17 18 Part No. PT7M7810L PT7M7810M PT7M7810T PT7M7810S PT7M7810R PT7M7810Z Code AH AI AJ AK AL AM Ver: 8 7 Data Sheet PT7M7803/09/10 P Supervisor Circuits ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Email: support@pti.com.cn Web Site: www.pti.com.cn, www.pti-ic.com China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 U.S.A.: 3545 North First Street, San Jose, California 95134, USA Tel: (1)-408-435 0800 Fax: (1)-408-435 1100 Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation. PT0249(08/09) Ver: 8 8