الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > الدوائر المتكاملة الخطية التناظرية > TLP293(GR-TPL,E

TLP293(GR-TPL,E

Phototransistor photocoupler, CTR G-rank 100-300%, 3750Vrms, SOP-4

12292

المخزون الفعال

انتقل إلى الاستفسار

Image for reference only

جزء الشركة المصنعة ： جزء الشركة المصنعة

TLP293(GR-TPL,E

الحزمة ： الحزمة

SO4 (SOP-4, 2.6 x 7.0 x 2.1 mm, 2.54mm pitch, MSL 3)

الوصف

نظرة عامة على المنتج

The TLP293(GR-TPL,E from Toshiba is a photocoupler with a gallium arsenide infrared LED optically coupled to a photo-transistor detector, providing 3750Vrms isolation in a SO4-4 (SOP-4) package with CTR rank G (100%-300%).

المواصفات الرئيسية

النوع	Phototransistor Output Photocoupler
جهد العزل	3750 Vrms (min)
CTR (Current Transfer Ratio)	100% ~ 300% (G rank @ IF=5mA)
Collector-Emitter Voltage	80V
Collector Current	50 mA
Forward Current	50 mA
Forward Voltage	1.25V typical / 1.4V max
Rise Time	4 us typical
Fall Time	7 us typical
الحزمة	SO4 (SOP-4, 2.6 x 7.0 x 2.1 mm)
درجة حرارة التشغيل	-55 to +110 C
موافقات السلامة	UL1577, cUL, EN 60747-5-5 (VDE)

الميزات

G-rank CTR (100%-300%) for reliable low-current drive
3750Vrms isolation voltage

التطبيقات

Signal isolation in industrial control
Power supply feedback loops
Isolated communication interfaces

مقدمة المنتج:TLP293(GR-TPL,E مقدمة المنتج

The TLP293(GR-TPL,E from Toshiba is a G-rank CTR variant of the TLP293 photocoupler family. The (GR-TPL,E suffix specifically designates the G CTR rank (100%-300% at IF=5mA, VCE=5V), the TPL package style (SOP-4 with tape and reel), and the E tape specification. The high CTR of the G rank makes this device particularly suitable for low-current drive applications where the LED forward current is limited (e.g., 1-5mA), such as interfaces driven directly from 3.3V MCUs with current-limiting resistors. At IF=5mA, the G-rank device provides 5-15mA of collector current, sufficient to drive most logic inputs and small relays without additional amplification. The TLP293 series is the industry-standard SOP-4 photocoupler, widely used as a drop-in replacement for the discontinued PC817 series in new designs. The 3750Vrms isolation voltage provides reinforced insulation for mains-connected applications up to 300Vrms working voltage. The SO4 (SOP-4) package is the smallest standard photocoupler package with 2.54mm lead pitch, compatible with both through-hole and SMT assembly processes.

مبدأ العمل:TLP293(GR-TPL,E مبدأ العمل

The TLP293(GR-TPL,E operates as an optically coupled isolator. Key subsystems include: (1) LED Input – a gallium arsenide (GaAs) infrared LED emits photons when forward current (IF) flows; the forward voltage is 1.25V typical at IF=20mA; the LED must be driven with a current-limiting resistor calculated as R = (VDD – VF) / IF; the LED has a typical capacitance of 25pF which limits the maximum switching speed; (2) Phototransistor Output – an NPN phototransistor whose base region is exposed to the LED’s infrared emission; photons absorbed in the base generate electron-hole pairs that provide base current, turning the transistor on; the CTR (Current Transfer Ratio) = IC/IF x 100% defines the current gain; the G-rank CTR of 100-300% means the output can sink 1-3x the LED input current; (3) Isolation Barrier – a transparent silicone dielectric between the LED and phototransistor provides galvanic isolation of 3750Vrms minimum; the silicone has a high dielectric strength and optical transparency; the internal shield between input and output reduces capacitive coupling to less than 0.8pF, limiting common-mode transient immunity degradation; (4) Switching – the phototransistor rise/fall times (4us/7us typical) are dominated by the base charge storage; for faster switching, a base-emitter resistor can be added to speed up turn-off, but this reduces CTR significantly.

وصف الدبوس:TLP293(GR-TPL,E تعريف الدبوس ووظائفه

دبوس	الاسم	الوظيفة
1	الأنود	LED anode (positive)
2	القطب السالب	LED cathode (negative)
3	الباعث	Phototransistor emitter
4	جامع التحصيل	Phototransistor collector

Application Scenarios:In which products and applications isTLP293(GR-TPL,E مستعمل

3.3V MCU isolation: G-rank CTR (100-300%) allows MCU GPIO (3.3V, 2-5mA) to drive LED directly, providing sufficient IC (5-15mA) to switch logic on secondary side without amplifier
SMPS feedback: LED driven by error amplifier output on secondary side, collector feeds PWM controller on primary side, 3750Vrms isolation meets IEC 60950 safety requirements
Industrial I/O: isolates 24V PLC input from 3.3V MCU, G-rank CTR ensures reliable switching at low IF

Alternative Models:What chips are recommended as replacements for TLP293(GR-TPL,E

الشركة المصنعة	رقم الجزء	الحزمة	الملاحظات
توشيبا	TLP291(GB	SOP-4	GB rank CTR (100-400%), wider range
توشيبا	TLP293(V	SOP-4	V rank CTR (50-150%), lower gain
Sharp	PC817C	DIP-4	Industry standard, C-rank CTR, through-hole
فيشاي	SFH619A-3X	DIP-4	CTR 100-200%, through-hole alternative