L6384
PIN DESCRIPTION
(continued)
N.
5
Name
LVG
Type
O
Function
Low Side Driver Output: the output stage can deliver 400mA source and 650mA sink [Typ.
Values].
The circuit guarantees 0.3V max on the pin (@ I
sink
= 10mA) with V
CC
> 3V and lower than
the turn on threshold. This allows to omit the bleeder resistor connected between the gate
and the source of the external mosfet normally used to hold the pin low; the gate driver
ensures low impedance also in SD conditions.
Upper Driver Floating Reference: layout care has to be taken to avoid below ground
spikes on this pin.
High Side Driver Output: the output stage can deliver 400mA source and 650mA sink
[Typ. Values].
The circuit gurantees 0.3V max between this pin and Vout (@ I
sink
= 10mA) with V
CC
> 3V
and lower than the turn on threshold. This allows to omit the bleeder resistor connected
between the gate and the source of the external mosfet normally used to hold the pin low;
the gate driver ensures low impedance also in SD conditions.
Bootstrap Supply Voltage: it is the upper driver floating supply. The bootstrap capacitor
connected between this pin and pin 6 can be fed by an internal structure named ”bootstrap
driver” (a patented structure). This structure can replace the external bootstrap diode.
6
7
Vout
HVG
O
O
8
Vboot
RECOMMENDED OPERATING CONDITIONS
Symbol
Vout
Vboot -
Vout
fsw
Vcc
T
j
2
Pin
6
8
Parameter
Output Voltage
Floating Supply Voltage
Switching Frequency
Supply Voltage
Junction Temperature
-45
HVG,LVG load CL = 1nF
Test Condition
Min.
Note1
Note1
Typ.
Max.
580
17
400
Vclamp
125
Unit
V
V
kHz
V
°C
Note 1:
If the condition Vboot - Vout < 18V is guaranteed, Vout can range from -3 to 580V.
ELECTRICAL CHARACTERISTICS
AC Operation (V
CC
= 14.4V; Tj = 25°C)
Symbol
ton
tonsd
toff
Pin
1 vs
5,7
3 vs
5,7
1 vs
5,7
Parameter
High/Low Side Driver
Turn-On Propagation Delay
Shut Down Input Propagation Delay
High/Low Side Driver
Turn-Off Propagation Delay
Vout = 0V
R
dt
= 47k
Ω
Vout = 0V
R
dt
= 146kΩ
Vout = 0V
R
dt
= 270k
Ω
tr
tf
7,5
7,5
Rise Time
Fall Time
CL = 1000pF
CL = 1000pF
Test Condition
Vout = 0V
R
dt
= 47kΩ
Min.
Typ.
200+dt
220
250
200
170
70
30
280
300
250
200
Max.
Unit
ns
ns
ns
ns
ns
ns
ns
DC Operation (V
CC
= 14.4V; Tj = 25°C)
Supply Voltage Section
Vclamp
Vccth1
Vccth2
2
2
2
Supply Voltage Clamping
Vcc UV Turn On Threshold
Vcc UV Turn Off Threshold
Is = 5mA
14.6
11.5
9.5
15.6
12
10
16.6
12.5
10.5
V
V
V
3/10
STMICROELECTRONICS [ STMICROELECTRONICS ]
