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U2008B-xY Datasheet(PDF) 6 Page - ATMEL Corporation |
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U2008B-xY Datasheet(HTML) 6 Page - ATMEL Corporation |
6 / 13 page 6 4712B–AUTO–10/05 U2008B 3. Absolute Maximum Ratings V S = 14 V, reference point Pin 4, unless otherwise specified Parameters Symbol Value Unit Current limitation Pin 5 t ≤10 µs -I S 30 mA -i S 100 mA Synchronous currents Pin 7 t ≤10 µs ±I syncV ±isyncV 5 20 mA mA Phase Control Pin 3 Control voltage -VI VS to 0 V Input current ±II 500 mA Charge current Pin 6 -Iϕmax 0.5 mA Load Current Monitoring/Soft Start, Pin 1 Input current II 1mA Input voltage VI -VS to +2 V Pulse output Input voltage Pin 8 +VI -V I 2 V S V V Storage temperature range T stg -40 to +125 ° C Junction temperature range T j -10 to +125 ° C 4. Thermal Resistance Parameters Symbol Value Unit Junction ambient DIP8 RthJA 110 K/W SO8 on p.c. RthJA 220 K/W So8 on ceramic RthJA 140 K/W 5. Electrical Characteristics Parameters Test Conditions Symbol Min. Typ. Max. Unit Supply (Pin 5) Supply-voltage limitation -IS = 3.5 mA -IS = 30 mA -VS -VS 14.5 14.6 16.5 16.8 V V Current requirement Pins 1, 4 and 7 open -IS 3.0 mA Voltage Monitoring (Pin 5) Turn-on threshold -VTON 11.3 12.3 V Phase Control Input current Voltage sync. Pin 7 Current sync. Pin 8 ±IsyncV ±I syncI 3 0.15 2 30 mA µA Voltage limitation ±I L = 2 mA Pin 7 ±V syncV 8.0 8.5 9.0 V Reference Ramp (see Figure 5-1 on page 7) Charge current Pin 7 Iϕ 1 100 µA Start voltage Pin 2 -V max 1.85 1.95 2.05 V |
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