NCV47722

Part: NCV47722PAAJR2G — onsemi

Type: High Side Switch with Adjustable Current Limit and Diagnostics

Description: Automotive high side switch with 250 mA output current, adjustable current limit up to 350 mA, 4.4–40 V recommended input range, current sense output, and OFF-state Short-to-Battery and Open Load diagnostics.

Operating Conditions:

• Supply voltage: 4.4–40 V (minimum is 4.4 V or Vout + 0.5 V, whichever is higher)
• Operating temperature: -40 to 150 °C (junction)
• Output current limit setting: 10–350 mA (set by RCSO)
• CSO capacitor: 1–4.7 μF

Absolute Maximum Ratings:

• Max input voltage (DC): 45 V (min -42 V)
• Max input voltage, load dump suppressed: 60 V
• Max junction temperature: 150 °C
• Storage temperature: -55 to 150 °C

Key Specs:

• Input-to-output differential voltage: 200 mV typ / 350 mV max at Iout = 200 mA; 225 mV typ / 400 mV max at Iout = 250 mA (Vin = 8–18 V)
• Current limit: 350 mA min (Vout = Vin - 1 V)
• Disable current: 0.002 μA typ, 10 μA max (VEN = 0 V)
• Quiescent current: 0.5 mA typ, 1.3 mA max at Iout = 500 μA; 11 mA typ, 25 mA max at Iout = 250 mA
• Enable threshold: 0.99 V min (low/OFF), 2.31 V max (high/ON)
• CSO voltage at current limit: 2.55 V typ (±4%, RCSO = 3.3 kΩ)
• Iout/ICSO ratio: 265 typ (±15%) for 10–50 mA; 285 typ (±5%) for 50–350 mA
• Thermal shutdown: 175 °C typ (150–195 °C)
• Thermal resistance junction-to-air: 62.6 °C/W (single layer PCB), 44.1 °C/W (4-layer PCB)

Features:

• Enable input compatible with 3.3 V logic
• Output current up to 250 mA, adjustable current limit up to 350 mA
• Protection: current limitation, thermal shutdown, reverse input voltage and reverse bias
• OFF-state diagnostics for Short to Battery and Open Load with internal components
• Open collector error flag output
• Analog output voltage monitoring output
• Pb-free, halogen free/BFR free, RoHS compliant
• AEC-Q100 Grade 1 qualified, PPAP capable
• HBM ESD capability of ±2 kV

Applications:

• Active safety systems
• Audio and infotainment systems

Package:

• TSSOP-14 Exposed Pad (CASE 948AW)

The NCV47722 High Side Switch (HSS) with 250 mA is designed for use in harsh automotive environments. The device has a high peak input voltage tolerance and reverse input voltage, reverse bias, overcurrent and overtemperature protections. The integrated current sense feature (adjustable by resistor connected to CSO pin) provides diagnosis and system protection functionality. The CSO pin output current creates voltage drop across CSO resistor which is proportional to output current. Extended diagnostic features in OFF state are also available and controlled by dedicated input and output pins.

• Active Safety System
• Audio and Infotainment System

*Vout_FB is sensed Vout output voltage via internal resistor divider

Figure 1. Application Schematic

This document contains information on some products that are still under development. onsemi reserves the right to change or discontinue these products without notice.

Figure 1. Application Schematic

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Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.

1. Load Dump Test B (with centralized load dump suppression) according to ISO16750-2 standard. Guaranteed by design. Not tested in production. Passed Class A according to ISO16750-1.

Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability.

1. Minimum Vin = 4.4 V or (V out + 0.5 V), whichever is higher.

2. Corresponding R CSO is in range from 76.5 k 9 down to 2185 9 .

Table 6. ELECTRICAL CHARACTERISTICS V in = 13.5 V, V EN = 3.3 V, R CSO = 0 9 , C CSO = 1 /C006D F, C in = 1 /C006D F, C out = 1 /C006D F, Min and Max values are valid for temperature range -40 ° C L T J L +150 ° C unless noted otherwise and are guaranteed by test, design or statistical correlation. Typical values are referenced to T J = 25 ° C (Note 8)

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions.

1. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at T A /C005B T J . Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.

2. Values based on design and/or characterization.

Table 6. ELECTRICAL CHARACTERISTICS V in = 13.5 V, V EN = 3.3 V, R CSO = 0 9 , C CSO = 1 /C006D F, C in = 1 /C006D F, C out = 1 /C006D F, Min and Max values are valid for temperature range -40 ° C L T J L +150 ° C unless noted otherwise and are guaranteed by test, design or statistical correlation. Typical values are referenced to T J = 25 ° C (Note 8)

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions.

1. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at T A /C005B T J . Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.

2. Values based on design and/or characterization.

• Active Safety System
• Audio and Infotainment System

*Vout_FB is sensed Vout output voltage via internal resistor divider

Figure 1. Application Schematic

This document contains information on some products that are still under development. onsemi reserves the right to change or discontinue these products without notice.

Figure 1. Application Schematic

1