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TBD62083AFWG

8-ch DMOS sink driver, 500mA/ch, 50V, clamp diodes, PSOP-18

3137

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جزء الشركة المصنعة ： جزء الشركة المصنعة

TBD62083AFWG

الحزمة ： الحزمة

PSOP-18 (SOL18, 11.4 x 7.5 x 2.2 mm, 1.27mm pitch)

الوصف

نظرة عامة على المنتج

The TBD62083AFWG from Toshiba is an 8-channel DMOS transistor array sink driver with 500mA per channel, 50V output voltage, and built-in clamp diodes in an 18-pin PSOP package.

المواصفات الرئيسية

القنوات	8 (DMOS sink drivers)
Output Voltage (sustaining)	50V (max)
Output Current per Channel	500 mA (max)
نطاق جهد الإدخال	2.5V to 25V (output on)
Input Threshold (off)	0.6V (max)
Clamp Diode Forward Current	400 mA (max)
Output Leakage Current	1.0 uA (max @ 50V, 85C)
Turn-On Delay	0.4 us (typ)
Turn-Off Delay	0.8 us (typ)
تبديد الطاقة	1.31 W (package)
الحزمة	PSOP-18 (SOL18, 1.27mm pitch)
درجة حرارة التشغيل	-40 to +85 C

الميزات

8-channel DMOS sink driver (lower VCE(sat) than Darlington)
500mA per channel output capability
Built-in clamp diodes for inductive load switching
2.5V minimum input for TTL/CMOS compatibility
Ultra-low 1uA output leakage current
Fast switching: 0.4us on, 0.8us off

التطبيقات

Relay and solenoid drivers
LED display drivers
Stepper motor drivers
Printer head drivers

مقدمة المنتج:TBD62083AFWG مقدمة المنتج

The TBD62083AFWG from Toshiba is an 8-channel DMOS (Double-Diffused MOS) transistor array designed as a modern replacement for traditional Darlington driver arrays like the ULN2803A. Unlike Darlington arrays that use bipolar NPN transistor pairs with high saturation voltage (typically 1.1-1.6V), the TBD62083A uses DMOS output transistors that provide significantly lower on-resistance and saturation voltage, resulting in lower power dissipation and higher efficiency. Each of the 8 channels can sink up to 500mA with a 50V output sustaining voltage, making the device suitable for driving relays, solenoids, stepper motors, and LED displays. The built-in clamp diodes on each output provide protection against inductive kickback when switching relay coils and motor windings. The input stage is compatible with 2.5V to 25V logic signals, covering both TTL/5V CMOS and higher-voltage control interfaces. The DMOS technology also provides much faster switching speeds (0.4us turn-on, 0.8us turn-off) compared to Darlington arrays (typically several microseconds), and lower output leakage current (1uA max vs. 50-100uA for Darlington). The PSOP-18 package (pin-compatible with SOP-18 ULN2803A) enables drop-in replacement in many applications. The TBD62083AFWG is pin-compatible with the TD62083AFG Darlington version, allowing easy upgrade to DMOS technology.

مبدأ العمل:TBD62083AFWG مبدأ العمل

The TBD62083AFWG operates as an 8-channel open-drain DMOS sinking driver. Key subsystems include: (1) DMOS Output Stage – each channel uses an N-channel DMOS transistor as the output switch; when the input is driven above the threshold (2.5V minimum), the DMOS transistor turns on and sinks current from the load to ground; the DMOS on-resistance is much lower than a Darlington pair, resulting in lower saturation voltage and power dissipation; (2) Input Stage – a level-shifting input circuit converts the logic-level input to the gate drive voltage for the DMOS transistor; the 2.5V minimum input voltage is compatible with 3.3V and 5V logic; the 0.6V maximum off-threshold ensures clean turn-off; (3) Clamp Diodes – each output has an integrated diode from the output to the COM pin; when an inductive load generates a flyback voltage spike, the clamp diode conducts, shunting the energy to the COM supply; the COM pin connects all diode cathodes and should be tied to the load supply; (4) Common Pin – the COM pin serves as the common connection for all 8 clamp diodes; it must be connected to the positive supply of the loads to provide a return path for inductive kickback current; (5) Low Leakage – the DMOS output has very low off-state leakage (1uA max at 85C), compared to Darlington arrays that have 50-100uA leakage due to collector-base leakage amplified by the Darlington current gain.

وصف الدبوس:TBD62083AFWG تعريف الدبوس ووظائفه

دبوس	الاسم	الوظيفة
1	IN1	Input channel 1
2	IN2	Input channel 2
3	IN3	Input channel 3
4	IN4	Input channel 4
5	IN5	Input channel 5
6	IN6	Input channel 6
7	IN7	Input channel 7
8	IN8	Input channel 8
9	GND	أرضي
10	كوم	Clamp diode common (connect to load supply)
11	OUT8	Output channel 8
12	OUT7	Output channel 7
13	OUT6	Output channel 6
14	OUT5	Output channel 5
15	OUT4	Output channel 4
16	OUT3	Output channel 3
17	خارج2	Output channel 2
18	خارج 1	Output channel 1

Application Scenarios:In which products and applications isTBD62083AFWG مستعمل

8-channel relay board: 3.3V MCU drives 8x 12V/100mA relays with built-in clamp diodes
Stepper motor: 4 channels drive unipolar stepper windings at 300mA with fast DMOS switching
LED matrix: sink 8 rows of high-brightness LEDs at 200mA per channel from 3.3V logic
ULN2803A upgrade: drop-in replacement with lower VCE(sat), faster switching, lower leakage

Alternative Models:What chips are recommended as replacements for TBD62083AFWG

الشركة المصنعة	رقم الجزء	الحزمة	الملاحظات
توشيبا	TBD62084AFWG	PSOP-18	10.5kOhm input (6-15V CMOS)
توشيبا	TD62083AFG	SOP-18	Darlington version, same pinout
أونسمي	ULN2803ADW	SOIC-18	Darlington, 500mA, industry standard
توشيبا	TBD62783AFWG	PSOP-18	8-ch source driver (high-side)