L6566B Datasheet, PDF (16/51 Pages) STMicroelectronics – Multi-mode controller for SMPS

Electrical characteristics
L6566B
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test condition
Min.
Soft-start
I_SS1
Charge current
I_SS2
I_SSdis Discharge current
V_SSclamp High saturation voltage
V_SSDIS Disable level
V_SSLAT Latch-off level
Gate driver
T_J = 25 °C, V_SS < 2 V,
V_COMP = 4 V
T_J = 25 °C, V_SS > 2 V,
V_COMP =V_COMPHi
V_SS > 2 V
V_COMP = 4 V
(1) _{VCOMP =VCOMPHi}
V_COMP =V_COMPHi
14
3.5
3.5
4.85
V_GDH Output high voltage
I_GDsource = 5 mA, Vcc = 12V
9.8
V_GDL Output low voltage
I_GDsink = 100 mA
I_sourcepk Output source peak current
-0.6
I_sinkpk Output sink peak current
0.8
t_f
Fall time
t_r
Rise time
V_GDclamp Output clamp voltage
I_GDsource = 5mA; Vcc = 20V
10
UVLO saturation
Vcc = 0 to Vccon, Isink = 1mA
1. Parameters tracking one another.
2. See Table 6 on page 41 and Table 7 on page 42
( ) 3. The Voltage Feedforward block output is given by: V_cs = Kc V_COMP − 2.5 − K_FF V_VFF
Typ.
20
5
5
2
5
6.4
11
0.75
40
50
11.3
0.9
Max.
26
6.5
6.5
5.15
15
1.1
Unit
µA
µA
V
V
V
V
V
A
A
ns
ns
V
V
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