Datasheet

Electrical specifications L6460
20/139 Doc ID 17713 Rev 1
V
loop
Loop voltage accuracy ±3%
V
SW_UV_f
Under voltage falling threshold
(10)
84.5 87 89.5 %
V
SW_UV_r
Under voltage rising threshold
(10)
90.5 93 95.5 %
V
SW_UV_hys
Under voltage hysteresis 6 %
t
prim_uv
Under voltage deglitch filter 5 µs
I
limit
Current limit protection
SelIlimit =”0”
SelIlimit =”1”
3.3
2.3
5
3.5
A
A
t
deglitch
Current limit deglitch time 50 ns
t
I_lim
Current limit response time
Normal operating mode (no
UV)
(11)
450 650 ns
t
I_limUV
Current limit response time in
UV condition
UV condition
(12)
200 400 ns
t
r
Switching output rise time
V
Supply
= 36V,
R
LOAD
= 422 Ω
(13)
530ns
t
f
Switching output fall time
V
Supply
= 36V,
R
LOAD
= 10 Ω
(13)
530ns
F
SW_PWM
Operating frequency
Fosc/6
4
kHz
Switching regulator controller
V
GS_ext
Gate to source voltage for
external FET
V
Pump
V
I
SOURCE
Source current
V
Pump
=V
Supply
+12V
V
SWCTR_GATE
=0V
25 50 mA
I
SINK
Sink current V
SWCTR_GATE
= V
Supply
20 mA
t
SINK
Sink discharge pulse time 600 ns
R
SUSTAIN
Gate-source sustain
resistance
(V
SWCTR_GATE
-
V
SWCTR_SRC
) = 0.2V
650 Ω
I
Q
Output
leakage current
V
Supply
= 36V,
T
junction
= 125°C
-40 +40 µA
I
Q_LP
Output leakage current in
“Low Power Mode”
V
Supply
= 36V,
T
junction
= 125°C
-5 +5 µA
V
FBREF
Switching regulator feedback
controller feedback reference
voltage
SelFBref = ‘00’
(8)
0.776 0.8 0.824 V
SelFBref = ‘01’ 0.97 1 1.03 V
SelFBref = ‘10’ 2.425 2.5 2.575 V
SelFBref = ‘11’ 2.91 3 3.09 V
I
SWDRV_FB
V
SWDRV_FB
pin current
V
Supply
= 36V,
T
junction
= 125°C
-10 +10 µA
V
loop
Loop voltage accuracy ±3%
Table 5. Electrical characteristics (continued)
Parameter Description Test condition Min Typ Max Unit