SL71061 AUK | Alldatasheet

Document overview

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Technical content

Features

  • Constant Voltage & Constant Current Control
  • Wide input voltage range : 2.2V to 14V
  • Internal Precision Voltage Reference : 1.240V ± 1%
  • Photo Coupler ( PC ) Drive Current : 40mA Typ.
  • Operating Current : 1mA Max.
  • Easy compensation & Low external component count.
  • Package Outline : SOT26.

Applications

  • Adapters
  • Battery chargers

Ordering Information

Type NO. Marking Package Code SL71061 761 SOT - 26 SSeemmiiccoonndduuccttoorr S L 7 1 0 6 1 CC, CV Control for Battery Charger & Adaptor O u t l i n e D i m e n s i o n s unit : mm PIN Connections 1. A -INPUT 2. GND 3. B +INPUT 4. Vcc 5. PC 6. A +INPUT 2.60~3.00 0.95 Typ. 1.50~1.70 0.95 Typ. 2.80~3.00 0.45 Max. 1.00~1.20 0.19 Max. 0.10 Max. 0.40 Min. 1 6 4 3

Typical Application : Adapter or Battery Charger Application Using SL71061 In the above application schematic, the SL71061 is used on the secondary side of a flyback adapter (or battery charger) to provide an accurate control of voltage and current. The above feedback loop is made with an optocoupler. SL71061

Name Pin No. Function A –INPUT 1 Input Pin of the Current Control Loop GND 2 Ground Line. 0V Reference For All Voltages B +INPUT 3 Input Pin of the Voltage Control Loop Vcc 4 DC Supply Line PC 5 Photo Coupler (P/C)Drive Pin. Sinking Current Only A +INPUT 6 Input Pin of the Current Control Loop Absolute Maximum Ratings Characteristic Symbol Value Unit DC Supply Voltage Vcc 16 V Power Dissipation Pd * 500 ㎽ Operating Ambient Temperature Range Topr -40 to 85 ℃ Storage Temperature Range Tstg -55 to 150 ℃ * Mount on a glass epoxy circuit board of 30x30mm Pad dimension of 50mm2 Operating Conditions Characteristic Symbol Value Unit DC Supply Voltage V CC 2.2 to 14 V

Electrical Characteristics

Ta = 25℃ and VCC = 5V (unless otherwise specified) Characteristic Symbol Test Condition Min. Typ. Max. Unit Operating Current I CC I PC = off - 0.6 1.0 ㎃ Leakage Current I PCLEAK V + = VPC = 14V - - 10 ㎂ Saturation Voltage V PCSAT IPC = 20 ㎃ - 500 700 ㎷ PC Terminal Current I PC - 20 40 70 ㎃ Output Voltage High V OH RL = 30 ㏀ - VCC – 0.1 - V SL71061

Electrical Characteristics (Continued) Ta = 25℃ and VCC = 5V (unless otherwise specified) Characteristic Symbol Test Condition Min. Typ. Max. Unit [A CH : Current Control Loop] Reference Voltage 1) V REF(A) IPC = 2.5 ㎃ 145 151 157 ㎷ Input Bias Current I B(A) - - 20 50 ㎂ Transconduction Gain 2) GM(A) - 1.5 8 - ㎃/㎷ [B Ch : Voltage Control Loop] Reference Voltage 3) V REF(B) IPC = 1.5 ㎃ 1.227 1.240 1.253 V Input Bias Current I B(B) - - 50 500 ㎁ Transconduction Gain 4) GM(B) - 1 3 - ㎃/㎷ 1) The internal current sense threshold is set to -151mV. The current control loop precision takes into account the cumulative effects of the internal voltage reference deviation as well as the input offset voltage of the trans- conduction operational amplifier. 2) When the positive input at ICTRL is lower than -151mV, and the voltage is decreased by 1mV, the sinking current at the output OUT will be increased by 8mA. 3) The internal voltage reference is set at 1.240V (bandgap reference). The voltage control loop precision takes into account the cumulative effects of the internal voltage reference deviation as well as the input offset voltage of the trans-conductance operational amplifier. 4) If the voltage on B +Input (the positive input of the amplifier) is higher than the negative amplifier input ( Vref(B) = 1.240V), and it is increased by 1mV, the sinking current at the output OUT will be increased by 3mA. SL71061

Fig.1 Supply current vs Ambient Temperature Fig.2 Vref(B) vs Ambient Temperature Fig.4 Saturation Voltage vs Ambient Temperature Fig. 5 Input Bias Current vs Ambient Temperature Fig.3 Vref(A) vs Ambient Temperature Icc vs Ta 0.0 0.4 0.8 1.2 -45 -25 -5 15 35 55 75 Ta [℃] Icc [mA] VCC : 2.2V VCC : 5.0V VCC : 12V Vref(B) vs Ta 1.225 1.230 1.235 1.240 1.245 1.250 -45 -25 -5 15 35 55 75 Ta [℃] Vref(B) [V] 2.2V ≤ VCC≤ 14V Vref(A) vs Ta 147 149 151 153 155 -45 -25 -5 15 35 55 75 Ta [℃] Vref (A) [mV] VCC : 5V Ib(B) vs Ta -45 -25 -5 15 35 55 75 Ta [℃] Ib(B) [nA] VCC : 5V Vpcsat vs Ta 100 200 300 400 500 600 700 -45 -25 -5 15 35 55 75 Ta [ ℃] Vpcsat(B) [mV] VCC : 5V, IPC=20㎃

The AUK Corp. products are intended for the use as components in general electronic equipment (Office and co mmunication equipment, m easuring equipment, home appliance, etc.). Please make sure that you consult with us before you use these AUK Corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to th e welfare of human life(atomi c energy control, airplane, spaceship, transportation, co mbustion control, all types of safety device, etc.). AUK Corp. cannot accept liability to any damage which may occur in case these AUK Corp. products were used in the mentioned equi pments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice.