الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > TPS7A4001DGNR

TPS7A4001DGNR

36V 1A low-noise LDO, 72dB PSRR, 13uVrms noise, adj 1.2-33V, VSSOP-8

3560

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جزء الشركة المصنعة ： جزء الشركة المصنعة

TPS7A4001DGNR

الحزمة ： الحزمة

8-Pin VSSOP PowerPAD (3.0 x 3.0 x 0.9 mm with exposed pad)

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 TPS7A4001DGNR is a Texas Instruments 36V, 1A low-noise, high-PSRR low-dropout linear regulator with adjustable output from 1.2V to 33V. It features 72 dB PSRR at 1 kHz, 13 uVrms output noise, 400 mV dropout at 1A, and reverse current protection. Packaged in 8-pin VSSOP PowerPAD rated for -40C to +125C.

المواصفات الرئيسية

جهد الإدخال	Up to 36 V
تيار الإخراج	1 A
Dropout	400 mV at 1 A
PSRRR	72 dB at 1 kHz
Noise	13 uVrms
Output Range	1.2 V to 33 V (adj)

الميزات

36 V maximum input voltage
1 A output current
72 dB PSRR at 1 kHz
13 uVrms output noise
Adjustable output 1.2V to 33V
400 mV dropout at 1A
Reverse current protection
Thermal shutdown and overcurrent

التطبيقات

RF and PLL power supply
High-precision ADC/DAC supply
Post-regulation after DC-DC
Test and measurement clean rails

مقدمة المنتج:TPS7A4001DGNR مقدمة المنتج

The TPS7A4001DGNR is a Texas Instruments low-noise, high-PSRR LDO linear regulator capable of sourcing 1 A from up to 36 V input. The adjustable output ranges from 1.2 V to 33 V, set by external resistor divider from the FB pin. With 72 dB PSRR at 1 kHz and 13 uVrms output noise (10 Hz-100 kHz), it provides ultra-clean power for noise-sensitive RF, PLL, and precision converter applications. The 400 mV maximum dropout at 1 A enables efficient regulation from 5V or 3.3V pre-regulators. Reverse current protection blocks parasitic current flow from output to input during power-down. Thermal shutdown and current limiting protect against fault conditions. Packaged in 8-pin VSSOP PowerPAD rated for -40C to +125C.

مبدأ العمل:TPS7A4001DGNR مبدأ العمل

The TPS7A4001 uses a PMOS pass transistor for low dropout and reverse current blocking. The error amplifier compares a fraction of the output voltage (from the external FB divider) with an internal 1.2 V reference, driving the PMOS gate to maintain regulation. The low output noise is achieved through a filtered internal bandgap reference. The high PSRR results from the high open-loop gain of the error amplifier at low frequencies and the output capacitor impedance at high frequencies. The FB pin allows Kelvin sensing for remote load regulation. Reverse current protection detects when VOUT exceeds VIN and disables the pass transistor, preventing current flow back to the input supply.

وصف الدبوس:TPS7A4001DGNR تعريف الدبوس ووظائفه

دبوس	Mnemonic	الوصف
1	EN	Enable (active high)
2	في	Input supply (up to 36V)
3	نورث كارولاينا	No connect
4	انتهى	Regulated output
5	FB	Feedback / adjust pin
6	PG	Power-good (open drain)
7	GND	أرضي
8	نورث كارولاينا	No connect