LSP3700. Precision AC Brown-out Supervisor IC. General Description. Features. Applications. LSP3700 Rev of /05/17.

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1 General Description LSP3700 provides a precise comparator to detect the rectified AC voltage, which could protect the SPS when AC voltage is low. At the same time, LSP3700 also provides the delay time to noise immunity. Features The Brown-out protection (BOP) setting by two resistor and auto restart. Wild operation voltage range. Two faults output Low standby current consumption High noise immunity RoHS compliant and Halogen free Applications TV open frame SMPS Adapter DVD and CD(R) 1 of 12

2 Block Diagram CD VCC IN1 FPO NDFP VSS Please be aware that an Important Notice concerning availability, disclaimers, and use in critical applications of LSC products is at the end of this document. 2 of 12

3 Ordering Information LSP 3700 X XX X Pin Count Package Type Pin-out Version Pin-out Version Package Type Pin Count A 01. FPO AA : SOT23 E : 6 (SOT23-6L) 02. VSS 03. VCC 04. NDFPO 05. CD 06. IN1 3 of 12

4 Pin Assignment SOT23-6L Top View LSP3700AAAE 01. FPO 02. VSS 03. VCC 04. NDFPO 05. CD 06. IN1 Pin Descriptions Pin Name Pin Description FPO VSS VCC NDFPO CD IN1 Fault Protect Pin Ground Power Supply Non-Delay Fault Protect Pin Delay Time Setting Capacitor Comparator Passive Terminal Input1 4 of 12

5 Absolute Maximum Ratings Characteristics Symbol Rating Unit Supply Voltage V CC -0.3 to 32 V Input Voltage Range V IN1, V CD -0.3 to 28 V Output Voltage Range V FPO, V FPOB -0.3 to 28 V Junction Temperature T J 150 C Storage Temperature T STG -60~150 C Lead Temperature (Soldering, 10 sec.) C Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) SOT23-6 θ JC 81 C/W SOT23-6 θ JA 250 C/W Power Dissipation SOT23-6 P D 400 mw ESD Withstand Voltage : - Human Body Model (HBM) - Machine Model (MM) HBM MM V V Moisture Sensitivity MSL Please refer the MSL label on the IC package bag/carton for detail Note 1. Stresses listed as the above Absolute Maximum Ratings may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. θ JA is measured in natural convection (still air) at T A = 25 C with the component mounted on a low effective thermal conductivity test board. Note 3. Devices are ESD sensitive. Handling precaution is recommended. Recommended Operating Conditions Characteristics Symbol Min Max Unit Supply Input Voltage V CC 5 28 V Operating Junction Temperature Range T J C Operating Ambient Temperature Range T A C Note 4. The device is not guaranteed to function outside its operating conditions. 5 of 12

6 Electrical Characteristics (V CC =12V, T A = 25 C, unless otherwise specified) Characteristics Symbol Conditions Min Typ Max Unit Supply Voltage (V CC Pin) Supply Voltage V CC V Supply Current I CC T J = -40~125 C (Note5) ua Reset Threshold Voltage V RSET V Gate Delay Time T gd us Brown-out Voltage function (IN1 Pin) NDFPO from Floating -> Low Brown Voltage Threshold (Note 1) V BVT T J = -40~125 C (Note5) NDFPO from Low -> Floating V T J = -40~125 C (Note5) Constant current output (CD Pin) V CD < 3 V Constant current I REF ua T J = -40~125 C (Note5) FPO from Low To Floating Protect Threshold Voltage V TH T J = -40~125 C (Note5) FPO from Floating To Low V T J = -40~125 C (Note5) of 12

7 Electrical Characteristics (Contd.) (V CC =12V, T A = 25 C, unless otherwise specified) Characteristics Symbol Conditions Min Typ Max Unit Open Drain Output (FPO Pin) Leakage Current I LKG1 V FPO=5V ua Low Level Output Voltage V OL1 I SINK=20mA V Non Delay Open Drain Output (NDFPO Pin) Leakage Current I LKG2 V NDFPO=5V ua Low Level Output Voltage V OL2 I SINK=20mA V Note 5. The full temperature characteristics are guaranteed by design. They are not tested in production. 7 of 12

8 Application Circuit V Brown-out = [(R 1 +R 2 )/R 2 ] of 12

9 Timing Chart CD delay: T = (C V CD )/I CD, Gate delay < 10uS 9 of 12

10 Marking Information SOT23-6L 1) = Marking Name A31= LSP3700AAAE 2) YWS = Date Code Y = Year W = Week S = Internal Code 10 of 12

11 Mechanical Information SOT23-6L 11 of 12

12 MSL (Moisture Sensitive Level) Information IPC/JEDEC J-STD-020D.1 Moisture Sensitivity Levels Table FLOOR LIFE LEVEL TIME CONDITION 1 Unlimited 30 C /85% 2 1 year 30 C /60% 2a 4 weeks 30 C /60% hours 30 C /60% 4 72 hours 30 C /60% 5 48 hours 30 C /60% a 24 hours 30 C /60% 6 Time on Label 30 C /60% (TOL) SOAK REQUIREMENTS Accelerated Equivalent 1 Standard ev ev CONDITION TIME TIME TIME CONDITION (hours) (hours) (hours) C /85% +5/-0 NA NA NA C /60% +5/-0 NA NA NA C /60% /-0-1/+0-1/+0 60 C/ 60% C /60% /-0-1/+0-1/+0 60 C/ 60% C /60% / / /-0 60 C/ 60% C /60% / / /-0 60 C/ 60% C /60% / / /-0 60 C/ 60% TOL 30 C /60% NA NA NA Note 1: CAUTION - To use the accelerated equivalent soak conditions, correlation of damage response (including electrical, after soak and reflow), should be established with the standard soak conditions. Alternatively, if the known activation energy for moisture diffusion of the package materials is in the range of ev or ev, the accelerated equivalent may be used. Accelerated soak times may vary due to material properties (e.g.mold compound, encapsulant, etc.). JEDEC document JESD22-A120 provides a method for determining the diffusion coefficient. Note 2: The standard soak time includes a default value of 24 hours for semiconductor manufacturer s exposure time (MET) between bake and bag and includes the maximum time allowed out of the bag at the distributor s facility. If the actual MET is less than 24 hours the soak time may be reduced. For soak conditions of 30 C/60%, the soak time is reduced by 1 hour for each hour the MET is less than 24 hours. For soak conditions of 60 C/60%, the soak time is reduced by 1 hour for each 5 hours the MET is less than 24 hours. If the actual MET is greater than 24 hours the soak time must be increased. If soak conditions are 30 C/60%, the soak time is increased 1 hour for each hour that the actual MET exceeds 24 hours. If soak conditions are 60 C/60%, the soak time is increased 1 hour for each 5 hours that the actual MET exceeds 24 hours. Important Notice and Disclaimer LSC reserves the right to make changes to this document and its products and specifications at any time without notice. Customers should obtain and confirm the latest product information and specifications before final design, purchase or use. LSC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does LSC assume any liability for application assistance or customer product design. LSC does not warrant or accept any liability with products which are purchased or used for any unintended or unauthorized application. No license is granted by implication or otherwise under any intellectual property rights of LSC. 12 of 12