Datasheet U2008B (Atmel) - 6

link to page 7
3. Absolute Maximum Ratings
Reference point pin 4, unless otherwise specified
Parameters Symbol Value Unit
Current limitation pin 5 –I 30 mA S t ≤ 10µs –i 100 mA S Synchronous currents pin 7 ±I 5 mA syncV t ≤ 10µs ±isyncV 20 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 1 mA Input voltage VI -VS to +2 V Pulse output +V 2 V Input voltage pin 8 I –V V V I S Storage temperature range T –40 to +125 °C stg Junction temperature range T –10 to +125 °C j
4. Thermal Resistance Parameters Symbol Value Unit
DIP8 RthJA 110 K/W Junction ambient SO8 on p.c. RthJA 220 K/W So8 on ceramic RthJA 140 K/W
5. Electrical Characteristics
VS = –13V, Tamb = 25°C, reference point pin 4, unless otherwise specified
Parameters Test Conditions Symbol Min. Typ. Max. Unit Supply (Pin 5)
–I –V 14.5 16.5 V Supply-voltage limitation S = 3.5mA S –IS = 30mA –VS 14.6 16.8 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
Voltage sync. pin 7 ±I 0.15 2 mA Input current syncV Current sync. pin 8 ±I 3 30 µA syncI Voltage limitation ±I = 2mA pin 7 ±V 8.0 8.5 9.0 V L syncV
Reference Ramp (see Figure 5-1 on page 7 )
Charge current Pin 7 Iϕ 1 100 µA Start voltage Pin 2 –V 1.85 1.95 2.05 V max
6 Atmel U2008B
4712D–AUTO–03/11 Document Outline Features Applications 1. Description 2. Pin Configuration 2.1 Mains Supply, Pin 5 2.2 Voltage Monitoring 2.3 Phase Control, Pin 6 2.4 Automatic Retriggering 2.5 Current Synchronization, Pin 8 2.6 Voltage Synchronization with Mains Voltage Compensation, Pin 7 2.7 Load Current Detection, Pin 1 3. Absolute Maximum Ratings 4. Thermal Resistance 5. Electrical Characteristics 6. Ordering Information 7. Package Information 8. Revision History