LRC CE8809 Series LESHAN RADIO COMPANY,LTD. ULTRA-SMALL PACKAGE BUILT-IN DELAY HIGH-PRECISION VOLTAGE DETECTOR ULTRA-SMALL BUILT-IN DELAY HIGH-PRECISION VOLTAGE DETECTOR Introduction The LR8809 Series is a series of high-precision voltage detectors with a built-in delay time generator of fixed time. developed using CMOS process. The detection voltage is fixed internally, with an accuracy of ±2.0 %. Internal oscillator and counter timer can delay the release signal without external parts, delay times 200 mS Two output forms, Nch pen-drain and CMOS output are available. Application • Memory battery back-up circuits • Power-on reset circuits • Power failure detection • Power monitor for portable equipment such as notebook computers, digital cameras, PDA, and cellular phones. • Constant voltage power monitors for cameras, video equipment and communication devices. • Power monitor for microcomputers and reset for CPUs. Features • Ultra-low current consumption: 1.0μ[email protected](typ) • High-precision detection voltage: ±2.0 % • Hysteresis characteristics: -VDET ×5%(typ) • Operating voltage range: 0.95 V to 8.0 V • Detection voltage: 1.5V to 6.0 V (0.1 V step) • Delay time: 200 mS(typ) • Output forms: NMOS open-drain output (Active Low) CMOS output (Active Low) Ordering Information CE8809①②③④ LR8809 DESIGNATOR ① ②③ ④ SYMBOL DESCRIPTION C CMOS N Nch open drain Integer Output Voltage(1.5V~6.0V) e.g. 3.0V= ②:3, ③:0 M/MA Package：SOT23-3 N/NA Package：SOT343(SC-82) P T/TA E Package：SOT89-3 Package：TO-92 Package：SOT23-6 Block Diagrams Nch open-drain CMOS output Note:*1-parasitic diode V0.3 LR8809 SERIES 1(7) LRC LESHAN RADIO COMPANY,LTD. Pin Configurations Table 1 LR8809 Series （SOT-23-3） PIN NO. M MA Functions 1 VDD VDD Voltage input pin VOUT - - VSS GND pin VSS - GND pin - VOUT Table 2 LR8809 Series （SOT-89-3） 2 3 Voltage detection output pin PIN NO P 1 VOUT Voltage detection output pin 2 VDD Voltage input pin 3 VSS GND pin Functions Table 3 PIN NO 1 2 3 PIN NO 1 2 3 4 LR8809 Series （TO-92） T TA VOUT - - VDD Voltage input pin VDD - Voltage input pin - VSS GND pin VSS - GND pin - VOUT Table 4 V0.3 Voltage detection output pin Voltage detection output pin Voltage detection output pin LR8809 Series （SOT343） N NA VOUT - - Functions VDD VDD Functions Voltage detection output pin Voltage input pin - Voltage input pin GND pin VSS NC - No Connection VSS - GND pin VOUT - 2(7) Voltage detection output pin LRC LESHAN RADIO COMPANY,LTD. Table 5 LR8809 Series （SOT23-6） PIN NO E 1 NC 2 VSS 3 VOUT 4 VDD 5 NC No Connection 6 NC No Connection Functions No Connection GND pin Voltage detection output pin Voltage input pin Absolute Maximum Ratings Item Symbol (Ta=25°C unless otherwise specified) Absolute maximum ratings Unit Power supply voltage VDD VSS－0.3 ~ VSS＋10 V Output voltage VOUT VSS－0.3 ~ VSS＋10 V 250 mW 500 mW 500 mW 250 mW SOT-23-3 Power SOT-89 dissipation TO-92 PD SOT343 Operating ambient temperature Topr －40 ~＋85 °C Storage temperature Tstg －40 ~＋125 °C Electrical Characteristics (Ta=25°C unless otherwise specified) Item Detection voltage*1 Hysteresis width Current consumption Operating voltage V0.3 Symbol Condition −VDET — VHYS — ISS VDD VDD =－VDET＋0.5V Min. −VDET(S) ×0.98 0.02× Typ. −VDET(S) 0.05× Max. −VDET(S) ×1.02 0.08× Unit V V −VDET(S) −VDET(S) −VDET(S) CE8809C/N20～26 — 1.0 2.0 uA CE8809 C/N 26～39 — 1.2 2.5 uA CE8809 C/N 39～60 — 1.5 3.0 uA 0.95 — 8 V — 3(7) LRC Output current Leakage current NMOS： CE8809 C/N 20～26 3.0 13.0 — mA VOUT =0.5 V CE8809 C/N 26～39 3.0 15.0 — mA CE8809 C/N 39～60 3.0 18.0 — mA PMOS： CE8809 C/N 20～26 1.5 4.0 — mA VDD－VOUT =0.5 V CE8809 C/N 26～39 1.5 6.0 — mA VDD =－VDET＋0.5 V CE8809 C/N 39～60 1.5 8.0 — mA — 0.1 uA — ±120 ±360 VDD =－VDET－0.5 V IOUT ILEAK temperature Only for NMOS open-drain output products, VDD =8.0 V, VOUT =8.0 V Ta=−40°C ~ +85°C coefficient Delay time LESHAN RADIO COMPANY,LTD. TD 200 ppm/ °C mS *1. −VDET: Actual detection voltage value, −VDET(S): Specified detection voltage value Functional Description 1. When a voltage higher than the release voltage (+VDET) is applied to the voltage input pin (VDD), the voltage will gradually fall..When a voltage higher than the detect voltage (-VDET) is applied to VDD , output (VOUT) will be equal to the input at VDD. Note that high impedance exists at VOUT with the N-channel open drain configuration. If the pin is pulled up, VOUT T will be equal to the pull up voltage. 2. When VDD falls below -VDET , VOUT will be equal to the ground voltage (VSS) level (detect state). Note that this also applies to N-channel open drain configurations. 3. When VDD falls to a level below that of the minimum operating voltage (VMIN ) output will become unstable. Because the output pin is generally pulled up with N-channel open drain configurations, output will be equal to pull up voltage. 4. When VDD rises above the VSS level (excepting levels lower than minimum operating voltage), VOUT will be equal to VSS until VDD reaches the +VDET level. 5 . Although VDD will rise to a level higher than +VDET, VOUT maintains ground voltage level via the delay circuit. 6. Following transient delay time, VDD will be output at VOUT. Note that high impedance exists with the N-channel open drain configuration and that voltage will be dependent on pull up. Notes : 1. The difference between -VDET and +VDET represents the hysteresis range. 2. Propagation delay time (tD) represents the time it takes for VDD to appear at VOUT once the said voltage has exceeded the +VDET level. V0.3 4(7) LRC LESHAN RADIO COMPANY,LTD. Standard Circuits 1、CMOS output： LR8809 2、Nch open-drain LR8809 LR8809 V0.3 5(7) LRC LESHAN RADIO COMPANY,LTD. Package information ● SOT-23-3 ● TO-92 V0.3 6(7) LRC LESHAN RADIO COMPANY,LTD. ● SOT-89 Symbols ● SOT343（SC-82） V0.3 7(7) Dimensions in millimeters Min Nom Max A 1.40 1.50 1.60 b 0.36 0.42 0.48 b1 0.41 0.47 0.53 b2 1.40 1.60 1.75 C 0.38 0.40 0.43 D 4.40 4.50 4.60 E － － 4.25 E1 2.40 2.50 2.60 θ 1.40 1.50 1.60 L 1.80 － － L1 － 0.40 －