Datasheet U2008B (Atmel) - 7

link to page 8 link to page 8 link to page 9 link to page 9
Atmel U2008B 5. Electrical Characteristics (Continued)
VS = –13V, Tamb = 25°C, reference point pin 4, unless otherwise specified
Parameters Test Conditions Symbol Min. Typ. Max. Unit
Temperature coefficient of start Pin 2 –TC –0.003 %/K voltage R Rϕ - reference voltage Iϕ = 10µA, pins 6 to 5 VRϕ 0.96 1.02 1.10 V I = 10µA, pin 6 TC 0.03 %/K Temperature coefficient ϕ VRϕ Iϕ = 1 A TC 0.06 %/K VRϕ
Pulse Output (see Figure 5-2 on page 8) (Pin 8)
Output-pulse current V = –1.2, R = 0Ω I 100 125 150 mA 8 GT 0 Output-pulse width C = 3.3nF, V = V t 30 µs 3 S limit p
Automatic Retriggering (Pin 8)
Turn-on threshold voltage ±V 20 60 mV ION Repetition rate I ≥ 150µA t 3 5 7.5 t 7 pp p
Soft Start (see Figure 5-4 on page 8) (Pin 1)
Starting current V = 8V I 5 10 15 µA 1–4 0 Final current V = –2V I 15 25 40 µA 1–4 0 Discharge current –I 0.5 mA 0 Output current Pin 3 –I 0.2 2 mA 0
Mains Voltage Compensation (see Figure 5-5 on page 9)
Pins 7, pin 3 Current transfer gain I /I G 14 17 20 7 3 Pins 1 and 2 open i Reverse current V(R6) = V3 = V7 = 0, pin 3 ±IR 2 µA
Load-current Detection, V7 = 0 (see Figure 5-7 on page 9)
Transfer gain I3/V1 G 0.28 0.32 0.37 µA/mV Offset current V1 = 0, V3 = –8V, pin 3 I0 0 3 6 µA Input voltage Pin 1 -VI 300 400 mV Input offset voltage Pin 1 ±V0 6 mV
Figure 5-1.
Ramp Control 250 200 α
(°)
33nF 10nF 6.8nF 4.7nF 3.3nF 2.2nF
le g n
150
e A s
C 100 ϕ/t = 1.5nF
Pha
50 0 0 200 400 600 800 1000
R
ϕ
(R8) (k
Ω
) 7
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