STMicroelectronics TSC888BILT

Overview

TSC888BILT from STMicroelectronics is a high-side current sense amplifier with fixed 50 V/V gain, operating over 2.8 V to 24 V input common-mode voltage and 4 V to 24 V supply voltage, consuming ≤1 mA quiescent current in SOT23-5 package-used for precision current monitoring in photovoltaic inverters and server SMPS.

For engineers reviewing the TSC888BILT datasheet, TSC888BILT pinout, TSC888BILT application, or TSC888BILT equivalent, key selection criteria include its independent V_CM/V_CC operation, ±6% total output accuracy, 95 dB CMR/SVR, buffered rail-to-rail output, and compatibility with shunt-based high-side sensing at voltages exceeding V_CC.

Technical Context

The TSC888BILT implements a precision differential-input, single-ended-output architecture optimized for high-side shunt measurement. Its input stage operates independently of V_CC, enabling V_CM up to 24 V while powered from as low as 4 V (e.g., 5 V_sb).

It features internally trimmed 50 V/V gain, 95 dB DC common-mode rejection, and 95 dB supply voltage rejection-ensuring stable output under varying bus voltage and supply conditions typical in solar charge controllers and notebook power rails.

Key Specifications

Pinout & Package

SOT23-5 plastic package (ECOPACK®), 1.45 mm height, 2.8 × 2.6 mm footprint, thermal resistance R_thJA = 250 °C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current sense amplifier applications.

Compared with INA240A1QDRQ1 and MAX4080TASA+, the TSC888BILT offers lowest BOM cost and smallest footprint for industrial 24 V systems where 50 V/V fixed gain and ±6% accuracy are sufficient-without needing AEC-Q100 or wideband performance.

Availability

TSC888BILT is available at Aetrix Electronics and suitable for photovoltaic inverters, server SMPS, notebook power adapters, and DC motor control systems requiring stable component supply with guaranteed long-term sourcing.

Supply support for TSC888BILT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The TSC888 belongs to ST's precision analog current sensing portfolio, engineered specifically for cost-sensitive, space-constrained high-side monitoring in power conversion systems operating up to 24 V.

FAQ

What is the maximum allowable differential input voltage (V_p − V_m) for TSC888BILT?

The absolute maximum differential input voltage is ±2 V, as specified in Table 2. Operation beyond this risks permanent damage to the input ESD protection structures. For reliable 50 mV–200 mV shunt sensing, this provides ample margin against transients and layout-induced spikes.

Can V_CC be connected directly to V_p in a high-side configuration?

Yes-V_CC may be tied to V_p per Figure 1 in the datasheet. This configuration is valid across the full 4 V–24 V supply range and eliminates need for auxiliary supply, provided V_p remains within V_CC absolute max rating (−0.3 V to +25 V).

Does TSC888BILT require external filtering on the output?

No external RC filter is required for basic DC or low-frequency (<1 kHz) current monitoring. The device's 100 kHz small-signal bandwidth and buffered output drive standard 10 kΩ ADC inputs directly. Add 100 pF capacitor only if high-frequency noise coupling is observed in layout.

How does the ±6% total output accuracy break down across temperature and supply variation?

The ±6% includes gain error (±1%), input offset voltage drift (±2.5 mV over −40°C to +85°C), and linearity error (±0.5%). It is measured at V_CC = 5 V, V_CM = 12 V, and is not significantly degraded at V_CC = 24 V due to 95 dB SVR.