ALTAIR04-900 Datasheet, PDF (7/29 Pages) STMicroelectronics – Off-line all-primary-sensing switching regulator

ALTAIR04-900
4
Electrical characteristics
Electrical characteristics
(T_J = -25 to 125 °C, Vcc = 14 V; unless otherwise specified)
Table 4.
Symbol
Electrical characteristics
Parameter
Test condition
Min. Typ. Max. Unit
Power section
V_(BR)DSS Drain-source breakdown
I_DSS Off state drain current
R_DS(on) Drain-source ON-state resistance
C_oss Effective (energy-related) output capacitance
High-voltage start-up generator
I_D< 100 µA; Tj = 25 °C
V_DS = 850 V; Tj = 125 °C
(See Figure 4 and note)
Id=250 mA; Tj = 25 °C
Id=250 mA; Tj = 125 °C
(See Figure 3)
900
V
80 µA
16 19
W
38
V_Start Min. Drain start voltage
I_charge Vcc startup charge current
V_CCrestart Vcc restart voltage (Vcc falling)
I_charge < 100 µA
V_DRAIN> V_Start; Vcc < Vcc_On
Tj = 25 °C
V_DRAIN> V_Start; Vcc < Vcc_On
(1)
After protection tripping
40 50 60 V
4 5.5 7
mA
+/-10%
9.5 10.5 11.5
V
5
Supply voltage
Vcc Operating range
Vcc_On
Vcc_Off
V_Z
Turn-on threshold
Turn-off threshold
Zener voltage
Supply current
After turn-on
(1)
(1)
Icc = 20 mA
11.5
23 V
12 13 14 V
9 10 11 V
23 25 27 V
Icc_start-up Start-up current
Iq Quiescent current
Icc Operating supply current @ 50 kHz
Iq_(fault) Fault quiescent current
(See Figure 5)
(See Figure 6)
(See Figure 7)
During hiccup and brownout
(See Figure 8)
200 300 µA
1 1.4 mA
1.4 1.7 mA
250 350 µA
Start-up timer
T_START Start timer period
T_RESTART Restart timer period during burst mode
Zero current detector
100 125 175 µs
400 500 700 µs
I_ZCDb Input bias current
V_ZCDH Upper clamp voltage
V_ZCD = 0.1 to 3 V
I_ZCD = 1 mA
0.1 1 µA
3.0 3.3 3.6 V
Doc ID 18211 Rev 2
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