Datasheet

L6460 Electrical specifications
Doc ID 17713 Rev 1 23/139
V
FBREF
Synchronous buck regulator
feedback reference voltage
SelFBRef = ‘00’ 0.776 0.8 0.824 V
SelFBRef = ‘01’
(21)
0.97 1 1.03 V
SelFBRef = ‘10’
(22)
2.425 2.5 2.575 V
SelFBRef = ‘11’ 2.91 3 3.09 V
I
GPIO_FB
GPIO feedback pin current
T
junction
= 125°C
0V≤Feedback ≤ 3V
-15 15 µA
V
out
Output voltage range V
Supply
= 36V
(23)
0.8 30 V
I
load
Output load current V
Supply
= 36V 0.002 1.5 A
R
DSonHS
Internal high/low side R
DSon
T
junction
= 125°C; I
load
=1A 0.6 0.8 Ω
V
loop
Loop voltage accuracy ±3%
V
REG_UV_f
Under voltage falling threshold
(24)
84.5 87 89.5 %
V
REG_UV_r
Under voltage rising threshold
(24)
90.5 93 95.5 %
V
REG_UV_hys
Under voltage hysteresis 6 %
t
aux_UV
Under voltage deglitch filter 5 µs
I
limit
Current limit protection 1.6 2.5 A
t
deglitch
Current limit deglitch time 50 ns
t
I_lim
Current limit response time
Normal operating mode
(no UV)
(11)
480 700 ns
t
I_limUV
Current limit response time in
UV condition.
UV condition
(12)
350 500 ns
t
r
Switching output rise time
V
Supply
= 36V,
R
LOAD
= 422 Ω
(25)
530ns
t
f
Switching output fall time
V
Supply
= 36V,
R
LOAD
= 10 Ω
(23)
10 50 ns
t
dead
Crossover dead time 100 ns
F
REGPWM
Operating frequency F
osc
/64 kHz
Battery charger (Bridge 4)
V
AUX3_SW
Output pin voltage range
(DC4x)
(26)
-1 V
Supply
V
I
Q
Output leakage current T
junction
= 125°C -100 +100 µA
V
FBRef
Battery charger control loop
feedback reference voltage
SelFBRef = ‘00’ 1.37 1.412 1.455 V
SelFBRef = ‘01’
(8)
1.746 1.8 1.854 V
SelFBRef = ‘10’ 2.079 2.143 2.207 V
SelFBRef = ‘11’ 2.425 2.5 2.575 V
Table 5. Electrical characteristics (continued)
Parameter Description Test condition Min Typ Max Unit