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PDF TDE1898CDP Data sheet ( Hoja de datos )

Número de pieza TDE1898CDP
Descripción 0.5A HIGH-SIDE DRIVER INDUSTRIAL INTELLIGENT POWER SWITCH
Fabricantes ST Microelectronics 
Logotipo ST Microelectronics Logotipo



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No Preview Available ! TDE1898CDP Hoja de datos, Descripción, Manual

TDE1897C
TDE1898C
0.5A HIGH-SIDE DRIVER
INDUSTRIAL INTELLIGENT POWER SWITCH
0.5A OUTPUT CURRENT
18V TO 35V SUPPLY VOLTAGE RANGE
INTERNAL CURRENT LIMITING
THERMAL SHUTDOWN
OPEN GROUND PROTECTION
INTERNAL NEGATIVE VOLTAGE CLAMPING
TO VS - 45V FOR FAST DEMAGNETIZATION
DIFFERENTIAL INPUTS WITH LARGE COM-
MON MODE RANGE AND THRESHOLD
HYSTERESIS
UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
OPEN LOAD DETECTION
TWO DIAGNOSTIC OUTPUTS
OUTPUT STATUS LED DRIVER
DESCRIPTION
The TDE1897C/TDE1898C is a monolithic Intelli-
gent Power Switch in Multipower BCD Technol-
BLOCK DIAGRAM
PRELIMINARY DATA
MULTIPOWER BCD TECHNOLOGY
Minidip
SIP9
SO20
ORDERING NUMBERS:
TDE1897CDP
TDE1898CDP
TDE1898CSP
TDE1897CFP
TDE1898CFP
ogy, for driving inductive or resistive loads. An in-
ternal Clamping Diode enables the fast demag-
netization of inductive loads.
Diagnostic for CPU feedback and extensive use
of electrical protections make this device inher-
ently indistructible and suitable for general pur-
pose industrial applications.
October 1995
1/12

1 page




TDE1898CDP pdf
TDE1897C - TDE1898C
APPLICATION INFORMATION
DEMAGNETIZATION OF INDUCTIVE LOADS
An internal zener diode, limiting the voltage
across the Power MOS to between 45 and 55V
(Vcl), provides safe and fast demagnetization of
inductive loads without external clamping devices.
The maximum energy that can be absorbed from
an inductive load is specified as 200mJ (at
Tj = 85°C).
To define the maximum switching frequency three
points have to be considered:
1) The total power dissipation is the sum of the
On State Power and of the Demagnetization
Energy multiplied by the frequency.
2) The total energy W dissipated in the device
during a demagnetization cycle (figg. 2, 3) is:
W = Vcl
L
RL
Io
Vcl – Vs
RL
log
1
+
VclV–sVs

Where:
Vcl = clamp voltage;
L = inductive load;
RL = resistive load;
Vs = supply voltage;
IO = ILOAD
3) In normal conditions the operating Junction
temperature should remain below 125°C.
Figure 3: Demagnetization Cycle Waveforms
Figure 2: Inductive Load Equivalent Circuit
Figure 4: Normalized RDSON vs. Junction
Temperature
D93IN018
α
1.8
1.6
α=
RDSON (Tj)
RDSON (Tj=25°C)
1.4
1.2
1.0
0.8
0.6
-25 0 25 50 75 100 125
Tj (°C)
5/12

5 Page





TDE1898CDP arduino
SO20 PACKAGE MECHANICAL DATA
DIM.
A
a1
a2
b
b1
C
c1
D
E
e
e3
F
L
M
S
MIN.
0.1
0.35
0.23
12.6
10
7.4
0.5
mm
TYP.
0.5
1.27
11.43
TDE1897C - TDE1898C
MAX.
2.65
0.2
2.45
0.49
0.32
MIN.
0.004
0.014
0.009
45° (typ.)
13.0 0.496
10.65
0.394
7.6 0.291
1.27 0.020
0.75
8° (max.)
inch
TYP.
0.020
0.050
0.450
MAX.
0.104
0.008
0.096
0.019
0.013
0.510
0.419
0.300
0.050
0.030
11/12

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