ZXCT1051E5TA Diodes Inc. Integrated Circuit (SOT23 (5-Pin)) In Stock
Diodes Inc. ZXCT1051E5TA is a high-side power and current monitor IC in a compact SOT-23-5 package, capable of sensing load currents up to 1 A with a supply voltage range of 2.5 V to 36 V. It delivers a voltage output proportional to load current for real-time monitoring without a low-side shunt resistor. Available from stock worldwide with fast shipping.
- Manufacturer
- Diodes Inc.
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- ZXCT1051E5TA Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6824(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- High-side current sensing from 2.5 V to 36 V supply range, enabling direct use in automotive and industrial 12 V and 24 V systems
- Single-channel voltage output proportional to load current, eliminating the need for additional op-amp stages in simple monitoring circuits
- Compact SOT-23-5 (R-PDSO-G5) package with 5 pins enables ultra-small PCB footprint of under 3 mm²
- RoHS-compliant (e3 JEDEC code) lead-free packaging for compliance with current environmental regulations
Applications
The ZXCT1051E5TA is used in power management and protection circuits where real-time high-side current monitoring is needed without disrupting the load's ground path, including battery management systems, DC motor drive monitors, and LED driver power rails operating at 2.5 V to 36 V. It is well suited for 12 V automotive accessory lines and 24 V industrial control panels where a 1-channel analog output signal simplifies current-to-voltage conversion for microcontroller ADC inputs. Designers also use it in USB power delivery and portable equipment charging circuits to implement over-current detection and load reporting.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 12Weeks |
| YTEOL | 7 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | HIGH SIDE POWER/CURRENT MONITOR| |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 20V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage range does the ZXCT1051E5TA support, and how does this enable use in automotive systems?
The ZXCT1051E5TA operates across a supply voltage range of 2.5 V to 36 V, which directly covers the nominal 12 V and 24 V rails common in automotive and industrial environments. This wide range means the device remains functional even when the rail fluctuates — for instance, during 12 V car battery conditions ranging from 9 V (cranking) to over 16 V (load dump transients), without requiring additional voltage regulators.
How does the ZXCT1051E5TA sense high-side current without a low-side shunt, and what gain accuracy can designers expect?
The ZXCT1051E5TA uses an internal transconductance amplifier to sense the voltage drop across an external high-side shunt resistor and produce a scaled voltage output, allowing load current monitoring without interrupting the ground reference path. Typical gain accuracy is within ±3% over the full operating temperature range, which is sufficient for most power monitoring and over-current detection applications where ±5% tolerance is acceptable.
What maximum load current can be monitored with ZXCT1051E5TA, and how should the shunt resistor be sized?
The ZXCT1051E5TA can monitor load currents up to approximately 1 A at the sensing input, though the practical upper limit depends on the external shunt resistor value. A typical 0.1 Ω shunt resistor produces a 100 mV sense voltage at 1 A, yielding a well-resolved output signal. For higher currents — such as 10 A — using a 10 mΩ shunt keeps power dissipation low while maintaining a usable 100 mV drop across the shunt at full load.
How does the SOT-23-5 package of ZXCT1051E5TA compare to larger packages for space-constrained PCB layouts?
The SOT-23-5 (R-PDSO-G5) package measures approximately 2.9 mm × 1.6 mm with a typical height of 1.1 mm, occupying under 5 mm² of PCB area. This is significantly smaller than an SO-8 or MSOP-8 package used for comparable current monitors, making ZXCT1051E5TA a strong choice for wearables, handheld instruments, and compact industrial modules where board space per function must be minimized.
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About Diodes Inc.
Diodes Inc. is a leading electronic component manufacturer. FindMyChip sources Diodes Inc. ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
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Diode
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1340 | $1.13 |
| 5+ | $0.9450 | $4.72 |
| 250+ | $0.7800 | $195.00 |
| 500+ | $0.7400 | $370.00 |
| 3000+ | $0.6850 | $2055.00 |
| 48000+ | $0.6824 | $32754.24 |
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