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PDF L9857 Data sheet ( Hoja de datos )
| Número de pieza | L9857 | |
| Descripción | High Voltage High Side Driver | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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L9857
High voltage high-side driver
Features
■ High voltage rail up to 450V
■ dV/dt immunity ±50V/nsec in full temperature
range
■ Driver current capability:
500mA SOURCE,
500mA SINK
■ Switching times 100ns rise/fall with 2.5nF load
■ CMOS/TTL Schmitt trigger inputs with
hysteresis and pull down
■ Under voltage lock out
■ Clamping on VCC
■ Non inverting input
■ Reset circuitry
■ SO8 package
Description
The L9857 is an high voltage device, manufactured
with the BCD "OFF-LINE" technology.
Order codes
Part number
L9857
L9857-TR
Op. Temp range, °C
-40 to +125
-40 to +125
SO-8
It has the capability of driving N Channel Power
MOS transistors. The Upper (Floating) Section is
enabled to work with voltage Rail up to 450V. The
Logic Inputs are CMOS/TTL compatible for ease
of interfacing with controlling devices..
Package
SO-8
SO-8
Packing
Tube
Tape & Reel
November 2006
Rev 1
1/12
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12
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L9857
Electrical specifications
2.3
Recommended operating conditions
For proper operations the device should be used within the recommended conditions.
Table 4.
Recommended operating conditions
Parameter
Value
Symbol
Definition
Min.
VB
High Side Driver Output Stage Voltage -5V
Transient 0.1µs
VS+10 (1)
VS
High Side Floating Supply Offset Voltage
- 20V Transient 0.1µs
-5
VHO
VCC
VIN
VRES
FS
Tamb
Output Voltage Gate Connection
Supply Voltage
Input Voltage
Reset Input Voltage
Switching Frequency
Ambient Temperature
VS
10
0
0
-40
1. Reset-Logic functional for VB-VS=2V, independent from VCC-level
Max.
VS+18
300
VB
18
VCC
VCC
200
125
Units
V
V
V
V
V
V
kHz
°C
2.4
Table 5.
Symbol
Electrical characteristics
Electrical characteristics
Unless otherwise specified, VCC = 15V, VBS = 15V, VS = 0V, IN = 0V, RES = 5V,
load R = 50Ω, C = 2.5nF. Unless otherwise noted, these specifications apply for an operating
junction temperature range of -40°C ≤ Tj ≤ 125°C.
Parameter
Test Condition
Min. Typ. Max. Unit
VCC Supply
VCCUV VCC Supply Undervoltage
VCCUVHY VCC Supply Undervoltage Lockout
S Hysteresis
tdUVCC
Undervoltage Lockout Response
Time
VCC rising from 0V
VCC dropping from 10V
VCC steps either from 10V
to 6V or from 6V to 10V
7.2
0.02
0.5
0.2
9.6
0.4
20
V
V
μs
IQCC VCC Supply Current
400 μA
VBS Supply
VBSUV VBS Supply Undervoltage
tdUVBS
Undervoltage Lockout Response
Time
VBS rising from 0V
VBS dropping from 10V
VBS steps either from 10V
to 6V or from 6V to 10V
7.2
0.5
9.6 V
20 μs
VBSUVHY VBS Supply Undervoltage Lockout
S Hysteresis
0.02 0.2
0.4
V
5/12
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L9857
5 Revision history
Table 6. Document revision history
Date
Revision
20-Nov-2006
1 Initial release.
Revision history
Changes
11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet L9857.PDF ] | |
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