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Technical content
Features
Complete PWM power control circuitry Uncommitted outputs for 200mA sink or source current Output control for single ended or push pull operation Internal regulator provides a stable 5V reference supply with 5% tolerance Adjustable dead-time control Package: DIP-16
Applications
PC power supply DC-DC convertor Figure 1. Package Type
Figure 2. Pin Configuration
1 VIN1+ Amplifier positive input
2 VIN1- Amplifier negative input
3 COMP Compensation pin
4 DEAD Dead time control
5 CT Oscillate capacitor pin, external timing capacitor
6 RT Oscillate resistor pin, external timing resistor
7 GND Ground
8 C1 Output transistor collector
9 E1 Output transistor emitter
10 E2 Output transistor emitter
11 C2 Output transistor collector
12 VCC Power supply pin
13 CTRL Output control pin
14 VREF Reference pin
15 VIN1- Amplifier negative input
16 VIN2+ Amplifier positive input
Table 1. Pin Configuration
Figure 3. Functional Block Diagram
August, 2016 Rev. 1.2 4/10 ©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com Voltage Mode PWM Controller SDC7500
Ordering Information
A:4.90V-4.99V B:4.99V-5.08V E1: Pb-free G1: Halogen-free TR: Tape Reel Blank: Tube X X - X Package DIP-16: Z X Package Temperature Part Number Marking ID Packing Type Pb-free Halogen-free Pb-free Halogen-free DIP-16 -40℃~85℃ SDC7500AZ -E1 SDC7500AZ -G1 SDC7500 SDC7500G Tube SDC7500BZ -E1 SDC7500BZ -G1 SDC7500 SDC7500G Tube SDC CONFIDENTIAL DOCUMENT
Table 2. Absolute Maximum Ratings Table 3. Recommended Operating Conditions
August, 2016 Rev. 1.2 6/10 ©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com Voltage Mode PWM Controller SDC7500 Electrical Characteristics (Ta=25°C, VCC=15.0V, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Reference Section Output voltage(SDC7500A) V IREF REF 4.90 =1mA - 4.99 V Output voltage(SDC7500B) 4.99 - 5.08 V Input regulation V VDelta_VV CC - =7V~40V 2 25 mV Output regulation V IDelta_VL REF - =1mA~10mA 1 15 mV Short-circuit output current I VSC REF - =0V, Ta=25°C 55 - mA Output voltage change with temperature Delta_VT Ta=-25°C~85°C - 0.2 1 % PWM Section Input threshold voltage V DUTY=0 TH - 4 4.5 V Input sink current I VSINK COMP 0.3 =0.7V 0.7 - mA Oscillator Section Frequency f CT=1nf, RT=12kΩ OSC 23 29 34 kHz Standard deviation of frequency Delta ALL Value of CT RT Ta constant - 10 - % Frequency change with temperature Delta_FT Ta=-25°C~85°C - - 12 % Frequency change with voltage Delta_FV VCC - =7V~40V 0.1 - % Amplifier Section Input offset voltage V VOFFSET O(PIN3) - =2.5V 2 10 mV Input offset current I VOFFSET O(PIN3) - =2.5V 25 250 nA Input bias current I VBIAS O(PIN3) - =2.5V 0.2 1 uA Output sink current I VSINK COMP 0.3 =0.5V 0.7 - mA Output source current I VSOURSE COMP -2 =3.5V - - mA Common-mode input voltage range V VIN CC -0.3~V=7V~40V V CC Open-loop voltage amplification G VV O 70 =0.5V~3.5V 95 - dB Unity-gain bandwidth f - BAND - 800 - kHz Common-mode rejection ratio R VREJ CC 65 =40V 80 - dB Dead Time Control Section Input bias I VBIAS I - =0V~5.25V -2 -10 uA Maximum duty cycle G VV I(PIN4) 45 =0 - - % Input threshold voltage V DUTY=0 TH - 2.7 3.3 V Input threshold voltage V DUTY=MAX TH 0 - - V SDC CONFIDENTIAL DOCUMENT
Figure 6. Typical Application
August, 2016 Rev. 1.2 9/10 ©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com Voltage Mode PWM Controller SDC7500 Package Dimension DIP-16 Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 3.710 4.310 0.146 0.170 A1 0.510 - 0.020 - A2 3.200 3.600 0.126 0.142 B 0.380 0.570 0.015 0.022 B1 1.524(BSC) 0.060(BSC) C 0.204 0.360 0.008 0.014 D 18.800 19.200 0.740 0.756 E 6.200 6.600 0.244 0.260 E1 7.320 7.920 0.288 0.312 e 2.540(BSC) 0.100(BSC) L 3.000 3.600 0.118 0.142 E2 8.400 9.000 0.331 0.354 SDC CONFIDENTIAL DOCUMENT
August, 2016 Rev. 1.2 10/10 ©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com Voltage Mode PWM Controller SDC7500 Shaoxing Devechip Microelectronics Co., Ltd. http://www.sdc-semi.com/ IMPORTANT NOTICE Information in this document is provided solely in connection with Shaoxing Devechip Microelectronics Co., Ltd. (abbr. SDC) products. SDC reserves the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at anytime, without notice . SDC does not assume any responsibility for use of any its products for any particular purpose, nor does SDC assume any liability arising out of the application or use of any its products or circuits. SDC does not convey any license under its patent rights or other rights nor the rights of others. © 2013 Devechip Microelectronics - All rights reserved Contact us: Headquarters of Shaoxing Address: Tian Mu Road, No13, Shaoxing city, Zhejiang province, China Zip code: 312000 Tel: (86) 0575-8861 6750 Fax: (86) 0575-8862 2882 Shenzhen Branch Address: 22A, Shangbu building, Nan Yuan Road, No.68, Futian District, Shenzhen city, Guangdong province, China Zip code: 518031 Tel: (86) 0755-8366 1155 Fax: (86) 0755-8301 8528 SDC CONFIDENTIAL DOCUMENT