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L9997ND013TR 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 L9997ND013TR은 전자 산업 및 응용 분야에서
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부품번호 L9997ND013TR 기능
기능 DUAL HALF BRIDGE DRIVER
제조업체 STMicroelectronics
로고 STMicroelectronics 로고


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L9997ND013TR 데이터시트, 핀배열, 회로
® L9997ND
DUAL HALF BRIDGE DRIVER
HALF BRIDGE OUTPUTS WITH TYPICAL
RON = 0.7
OUTPUT CURRENT CAPABILITY ±1.2A
OPERATING SUPPLY VOLTAGE RANGE 7V
TO 16.5V
SUPPLY OVERVOLTAGE PROTECTION
FUNCTION FOR VVS UP TO 40V
VERY LOW QUIESCENT CURRENT IN
STANDBY MODE < 1µA
CMOS COMPATIBLE INPUTS WITH HYS-
TERESIS
OUTPUT SHORT-CIRCUIT PROTECTION
THERMAL SHUTDOWN
REAL TIME DIAGNOSTIC: THERMAL OVER-
LOAD, OVERVOLTAGE
MULTIPOWER BCD TECHNOLOGY
SO20 (12+4+4)
ORDERING NUMBERS: L9997ND
L9997ND013TR
DESCRIPTION
The L9997ND is a monolithic integrated driver, in
BCD technology intended to drive various loads,
including DC motors. The circuit is optimized for
automotive electronics enviromental conditions.
BLOCK DIAGRAM
VS
1
EN
10
VS
ENABLE
REFERENCE PROTECTION
BIAS
FUNC TIONS
VS
DIAG
11
5V
IN1
12
DRIVER 1
OUT1
19
IN2
9
April 1999
DRIVER 2
M
VS
OUT2
2
GND
4...7, 14...17
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L9997ND013TR pdf, 반도체, 판매, 대치품
L9997ND
The device is activated with enable input voltage
HIGH. For enable input floating (not connected)
or LOW the device is in Standby Mode. Very low
quiescent current is defined for VEN < 0.3V. When
activating or disactivating the device by the en-
able input a wake-up time of 50µs is recom-
mended.
For braking of the motor the status 2 is recom-
mended. The reason for this recommendation is
that the device features higher threshold for ini-
tialisation of parasitic structures than in state 5.
The inputs IN1, IN2 features internal sink current
generators of 10µA, disabled in standby mode.
With these input current generators the input level
is forced to LOW for inputs open. In this condition
the outputs are in SNK state.
The circuit features an overvoltage disable func-
tion referred to the supply voltage VVS. This func-
tion assures disabling the power outputs, when
the supply voltage exceeds the over voltage
threshold value of 19V typ. Both outputs are
forced to tristate in this condition and the diagnos-
tic output is ON.
The thermal shut-down disables the outputs (tris-
tate) and activates the diagnostic when the junc-
tion temperature increases above the thermal
shut-down threshold temperature of min. 150°C.
For the start of a heavy loaded motor, if the motor
current reaches the max. value, it is necessary to
respect the dynamical thermal resistance junction
to ambient. The outputs OUT1 and OUT2 are pro-
tected against short circuit to GND or VS, for sup-
ply voltages up to the overvoltage disable thresh-
old.
The output power DMOS transistors works in lin-
ear mode for an output current less than 1.2A. In-
creasing the output load current (> 1.2A) the out-
put transistor changes in the current regulation
mode, see Fig.6, with the typical output current
value below 2A. The SRC output power DMOS
transistors requires a voltage drop ~3V to activate
the current regulation. Below this voltage drop is
the device also protected. The output current heat
up the power DMOS transistor, the RDSON in-
creases with the junction temperature and de-
creases the output current. The power dissipation
in this condition can activate the thermal shut-
down . In the case of output disable due to ther-
mal overload the output remains disabled untill
the junction temperature decreases under the
thermal enable threshold.
Permanent short circuit condition with power dis-
sipation leading to chip overheating and activation
of the thermal shut-down leads to the thermal os-
cillation. The junction temperature difference be-
tween the switch ON and OFF points is the ther-
mal hysteresis of the thermal protection. This
hysteresis together with the thermal impedance
and ambient temperature determines the fre-
quency of this thermal oscillation, its typical val-
ues are in the range of 10kHz.
The open drain diagnostic output needs an exter-
nal pull-up resistor to a 5V supply. In systems
with several L9997ND the diagnostic outputs can
be connected together with a common pull-up re-
sistor. The DIAG output current is internally lim-
ited.
Fig. 1 shows a typical application diagram for the
DC motor driving. To assure the safety of the cir-
cuit in the reverse battery condition a reverse pro-
tection diode D1 is necessary. The transient pro-
tection diode D2 must assure that the maximal
supply voltage VVS during the transients at the
VBAT line will be limited to a value lower than the
absolute maximum rating for VVS.
Figure 1: Application Circuit Diagram.
5V
47K
IDIAG1
DIAG1
CONTROL
LOGIC
IIN1
IN1
IIN2
IN2
IEN
EN
Is
VS
L9997ND
CS
OUT1
IOUT1
D1
D2
VBAT
IM
VM
M
OUT2
GND
IOUT2
GND
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L9997ND013TR 전자부품, 판매, 대치품
Figure 6. IOUT versus VOUT (pulsed measurement with TON = 500µs, TOFF = 500ms).
L9997ND
Figure 7. Test circuit.
12V 100µF 200nF
EN
VS
10k
5V
DIAG
IN1
VEN
VIN1
VIN2
IN2
L9997ND
OUT1 15
OUT2 15
GND
7/9

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부품번호상세설명 및 기능제조사
L9997ND013TR

DUAL HALF BRIDGE DRIVER

STMicroelectronics
STMicroelectronics

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