الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > TPS74801DRCR

TPS74801DRCR

1.5A LDO, 0.8-3.6V adj, 60mV dropout, soft-start, PG, VSON-10 (3x3mm)

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جزء الشركة المصنعة ： جزء الشركة المصنعة

TPS74801DRCR

الحزمة ： الحزمة

10-VSON (3 x 3 x 1mm, 0.5mm pitch)

العلامة التجارية ： العلامة التجارية

فئات المنتجات:：فئات المنتجات

الدوائر المتكاملة الدوائر المتكاملة, منظِّمات التسرب المنخفض (LDO)

توصيات أخرى قد تكون مهتماً بها.

SII9396SCNUC-BAR

IS43TR16256BL-125KBLI

الوصف

نظرة عامة على المنتج

The TPS74801DRCR is a 1.5A low-dropout linear regulator from Texas Instruments with adjustable 0.8V to 3.6V output, 60mV typical dropout, programmable soft-start, and power-good output in a 10-pin VSON (3x3mm) package.

المواصفات الرئيسية

Output Voltage Range	0.8V to 3.6V (adjustable)
الحد الأقصى لتيار الإخراج الأقصى	1.5A
نطاق جهد الإدخال	0.8V to 5.5V
Bias Voltage Range	2.7V to 5.5V
جهد التسرب	60mV typical, 165mV max at 1.5A
Reference Voltage	804mV (0.5% initial accuracy)
دقة الإخراج	1.3% over line, load, and temperature
تيار التهدئة	1mA typical
PSRRR	50dB at 1kHz, 30dB at 300kHz
ضوضاء الإخراج	20µVrms
Soft Start	Programmable via external capacitor
درجة حرارة التشغيل	-40 درجة مئوية إلى +125 درجة مئوية
الحزمة	10-VSON (3 x 3 x 1mm)

الميزات

Ultra-low 60mV dropout at 1.5A with 5V bias
Input voltage as low as 0.8V with separate bias supply
Programmable soft-start for monotonic voltage ramp
Power-good open-drain output for sequencing
Internal 833Ω output pulldown when disabled
Stable with only 2.2µF ceramic output capacitor
Thermal shutdown, overcurrent, and UVLO protection
1.3% accuracy over line, load, and temperature

التطبيقات

FPGA and ASIC core power
Post-regulation for DC-DC converters
Processor power supply sequencing
Low-voltage point-of-load regulation
Noise-sensitive analog and RF loads

مقدمة المنتج:TPS74801DRCR مقدمة المنتج

The TPS74801DRCR is a 1.5A low-dropout linear regulator from Texas Instruments designed for very low input voltage and ultra-low dropout applications. The adjustable output ranges from 0.8V to 3.6V with 1.3% accuracy. A separate bias input (2.7V-5.5V) powers the internal control circuitry, enabling the main input to operate as low as 0.8V while maintaining excellent transient performance. The dropout voltage is only 60mV typical at 1.5A with a 5V bias supply. Programmable soft-start via an external capacitor ensures monotonic startup and controlled inrush current. The power-good output monitors the output voltage for sequencing downstream supplies. An internal 833Ω pulldown resistor discharges the output when the device is disabled.

مبدأ العمل:TPS74801DRCR مبدأ العمل

The TPS74801DRCR uses a PMOS pass element with a separate bias supply architecture. The BIAS pin (2.7V-5.5V) powers the error amplifier, bandgap reference, and gate driver, while the IN pin (0.8V-5.5V) supplies the load current through the PMOS pass transistor. This separation allows the input voltage to drop to within 60mV of the output while the bias supply maintains sufficient gate drive for the PMOS. The error amplifier compares the feedback voltage (set by external resistor divider on the FB pin) with the 804mV internal reference, adjusting the gate drive to maintain regulation. The programmable soft-start circuit uses an external capacitor on the SS pin to control the reference voltage ramp rate, ensuring monotonic startup without overshoot. The power-good comparator drives the PG open-drain output when VOUT exceeds 90% of the nominal value. When disabled via EN pin, the internal 833Ω pulldown resistor discharges the output capacitor. Thermal shutdown at 165°C and current limiting at 2A minimum protect the device from fault conditions.

وصف الدبوس:TPS74801DRCR تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوصف
1	انتهى	الطاقة	Regulated output (0.8V-3.6V, up to 1.5A)
2	انتهى	الطاقة	Regulated output (0.8V-3.6V, up to 1.5A)
3	س س	المدخلات	Soft-start capacitor connection to GND
4	PG	المخرجات	Power-good open-drain output
5	EN	المدخلات	Enable input (active high)
6	BIAS	الطاقة	Bias supply (2.7V-5.5V)
7	GND	الطاقة	Ground and thermal pad
8	في	الطاقة	Input supply (0.8V-5.5V)
9	في	الطاقة	Input supply (0.8V-5.5V)
10	FB	المدخلات	Feedback voltage (connect external resistor divider)

Application Scenarios:In which products and applications isTPS74801DRCR مستعمل

FPGA Core Power: 0.8V minimum VIN and 60mV dropout efficiently regulate 1.0V-1.2V core rails from 1.5V-1.8V intermediate supplies
Power Sequencing: PG output and programmable soft-start control the power-up order for multi-rail processors
Post-DC/DC Regulation: 20µVrms noise and 50dB PSRR clean switching converter ripple for noise-sensitive loads
Low-Voltage POL: Separate bias architecture maintains performance even when VIN approaches VOUT
Monotonic Startup: Programmable soft-start ensures voltage rises monotonically, meeting processor startup requirements

Alternative Models:What chips are recommended as replacements for TPS74801DRCR

الطراز	الشركة المصنعة	الفرق الرئيسي	الحزمة	Specs
TPS74801DRCRG4	TI	Green/RoHS compliant variant	-	-
TPS74801RGWR	TI	Same in VQFN-20 (5x5mm) package	-	-
TPS7A4700RGWR	TI	1A, ultra-low noise (3.8µVrms), higher PSRR	-	-
NCP59748MN1ADJTBG	أونسمي	1.5A LDO, adjustable, similar specs	-	-
ISL8015IRTAJZ	رينيساس	1.5A LDO, 2.2V-6V input, DFN-8	-	-