الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > TPS7A7007001DDAR

TPS7A7007001DDAR

2A LDO قابل للضبط 2A، 1.425-6.5 فولت للداخل، 0.5-5 فولت للخارج، 200mV Vdo@1A، دبوس تمكين HSOIC-8 PowerPAD، -40 ~ 125 درجة مئوية

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جزء الشركة المصنعة ： جزء الشركة المصنعة

TPS7A7007001DDAR

الحزمة ： الحزمة

وسادة الطاقة HSOIC-8 PowerPAD (DDA) (4.9 × 6.0 × 1.55 مم، 1.27 مم، وسادة حرارية مكشوفة)

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

The TPS7A7001DDAR from Texas Instruments is a 2-A adjustable ultra-low-dropout (LDO) voltage regulator in an 8-pin HSOIC PowerPAD package (4.9 x 6.0 mm). It operates with input voltage as low as 1.425 V up to 6.5 V, with adjustable output from 0.5 V to 5 V set via external resistor divider. Maximum dropout is 380 mV at 2 A. The device features an enable pin with 1-µA shutdown quiescent current, 200 mV typical dropout at 1 A, 2% output accuracy, current limit and thermal shutdown protection. PSRR is 28 dB at 100 kHz. Operating temperature range is -40°C to +125°C. Target applications include telecom and networking cards, motherboard peripherals, set-top boxes, and battery-powered systems requiring very low VIN-to-VOUT differential at high current.

مقدمة المنتج:TPS7A7007001DDAR مقدمة المنتج

The TPS7A7001 is a high-performance positive-voltage LDO regulator from TI designed for applications requiring very low input voltage and very low dropout at up to 2 A. The device operates with input voltage as low as 1.425 V, making it suitable for low-voltage rails derived from single-cell Li-ion or point-of-load converters. The output voltage is adjustable from 0.5 V using an external resistor divider, with a 0.5-V internal reference.

The ultra-low dropout voltage (200 mV typical at 1 A, 380 mV max at 2 A) enables efficient regulation where VOUT is close to VIN, minimizing power dissipation. The enable (EN) pin provides on/off control with only 1-µA quiescent current in shutdown, suitable for power-sequencing and standby modes.

The HSOIC-8 PowerPAD package (DDA) provides a low thermal resistance of 46.4°C/W junction-to-ambient when soldered to a PCB with thermal vias. This allows the device to dissipate up to 2 W in typical PCB configurations without overheating, sufficient for 2-A loads with up to 1 V of input-to-output differential.

The internal current limit and thermal shutdown protect the device during fault conditions. The 2% output accuracy over line, load, and temperature ensures stable supply rails for sensitive loads such as FPGAs, DSPs, and RF sections. The minimum 4.7-µF output capacitor (ceramic) ensures stability with low ESR.

The TPS7A7001 complements TI’s lower-current LDO families (TPS736xx, TPS737xx) by providing higher output current while maintaining low dropout, filling the gap between 1-A LDOs and switching regulators for mid-power POL applications.

مبدأ العمل:TPS7A7007001DDAR مبدأ العمل

**Pass Transistor Regulation:** The TPS7A7001 uses a P-channel MOSFET pass transistor driven by an error amplifier. The error amplifier compares a fraction of the output voltage (via the external R1/R2 divider) with the internal 0.5-V bandgap reference. When VOUT drops below the target, the error amplifier drives the PMOS gate harder, reducing RDS(on) and increasing output current. When VOUT rises above the target, the gate drive reduces, increasing RDS(on) and decreasing output current.

**Dropout Operation:** In dropout, the PMOS pass transistor is fully enhanced (gate driven to near ground). The dropout voltage equals ID x RDS(on) of the fully-enhanced PMOS. The low 200-mV dropout at 1 A reflects the low channel resistance of the large PMOS device.

**Enable and Shutdown:** The EN pin controls an internal bias circuit. When EN is below the threshold (~1.2 V), all internal bias is disabled, and the output is high-impedance. Ground current drops to 1 µA maximum. When EN is above the threshold, the regulator operates normally.

**Protection Circuits:** The current limit circuit senses output current and clamps it to a safe level (typically 2.8 A) during overload. The thermal shutdown disables the output when junction temperature exceeds ~160°C, with ~20°C hysteresis to prevent oscillation.

وصف الدبوس:TPS7A7007001DDAR تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوصف
1	نورث كارولاينا	-	No internal connection; leave floating or connect to GND
2	EN	I	Enable input; drive high (>1.2V) to enable regulator; drive low (<0.4V) to enter shutdown (1µA IQ); do not leave floating
3	نورث كارولاينا	-	No internal connection
4	في	P	Input supply; 1.425V to 6.5V; bypass with ≥4.7µF ceramic capacitor to GND
5	انتهى	O	Regulated output; connect external R1/R2 divider to FB; bypass with ≥4.7µF ceramic; max load 2A
6	FB	I	Feedback input; connect to R1/R2 divider junction; VFB = 0.5V reference; output voltage = 0.5V x (1 + R1/R2)
7	GND	G	تأريض؛ التوصيل بالمستوى الأرضي لثنائي الفينيل متعدد الكلور
8	نورث كارولاينا	-	No internal connection
الوسادة	PowerPAD	G	Exposed thermal pad; electrically GND; solder to PCB ground plane with thermal vias for heat dissipation

Application Scenarios:In which products and applications isTPS7A7007001DDAR مستعمل

التطبيق	الوصف
Low-Voltage POL Regulator	Regulate 1.8V/2.5V rail to 1.0-1.5V at 1-2A for FPGA/DSP core; VIN as low as 1.425V enables direct regulation from 1.8V bus; 200mV dropout leaves 300mV headroom; pair with sequencing controller for power-up ordering
Li-Ion Battery Powered System	Regulate 3.6-4.2V battery to 3.3V at up to 2A; dropout <200mV at 1A allows operation down to 3.5V battery; enable pin for load switching; 1µA shutdown extends battery life in sleep mode
Telecom Line Card	Regulate 3.3V or 5V intermediate rail to lower voltage for ASIC/PHY; enable pin supports hot-swap sequencing; thermal shutdown protects during fault; SO-8 PowerPAD fits dense line cards

Alternative Models:What chips are recommended as replacements for TPS7A7007001DDAR

الطراز	الشركة المصنعة	التوافق	الفرق الرئيسي
TPS7A7002DDAR	TI	متغير السلسلة	Same 2A LDO in DDA package; fixed output voltage options; no external resistors needed; use when fixed output preferred
TLV75501PDRV	TI	المعادل الوظيفي	1A adjustable LDO; 2.0-5.5V input; 160mV dropout@1A; SOT-23-6; lower current but smaller footprint; use for <1A loads
NCV8164AMX330TCG	أونسمي	البديل التنافسي	300mA LDO; 2.2-5.5V; ultra-low noise; automotive AEC-Q100; use for automotive low-noise applications at lower current
AP2112K-ADJTRG1	شركة ديودز	المعادل الوظيفي	600mA adjustable LDO; 2.5-6V input; SOT-23-5; much lower current; use for light-load low-cost applications