STMPS2141, STMPS2151, STMPS2161, STMPS2171 Enhanced single channel power switches Datasheet production data Features 90 m high-side MOSFET switch 500/1000 mA continuous current Thermal and short-circuit protection with overcurrent logic output Operating range from 2.7 to 5.5 V SOT23-5L SO-8 CMOS and TTL compatible enable input Undervoltage lockout (UVLO) 12 A maximum standby supply current Ambient temperature range, -40 to 85 C 8 kV ESD protection MSOP8 Reverse current protection Fault blanking UL recognized components (UL file number: E354278) When the output load exceeds the current limit threshold or a short is present, the device limits the output current to a safe level by switching into Description a constant current mode. When continuous heavy The STMPS2141, STMPS2151, STMPS2161, overloads and short-circuits increase the power STMPS2171 power distribution switches are dissipation in the switch, causing the junction intended for applications where heavy capacitive temperature to rise, a thermal protection circuit loads and short-circuits are likely to be shuts the switch off to prevent damage. Recovery encountered. These devices incorporate 90 m from a thermal shutdown is automatic once the N-channel MOSFET high-side power switches for device has cooled sufficiently. Internal circuitry power distribution. These switches are controlled ensures the switch remains off until a valid input by a logic enable input. voltage is present. Table 1. Device summary Order codes Rated continuous output current Enable (1) (mA) SO-8 SOT23-5L MSOP8 STMPS2141MTR STMPS2141STR STMPS2141TTR 500 Active low STMPS2151MTR STMPS2151STR STMPS2151TTR 500 Active high STMPS2161MTR STMPS2161STR STMPS2161TTR 1000 Active low STMPS2171MTR STMPS2171STR STMPS2171TTR 1000 Active high 1. MSOP8 package is also known as TSSOP8. January 2013 Doc ID 13793 Rev 6 1/37 This is information on a product in full production. www.st.com 1Contents STMPS2141, STMPS2151, STMPS2161, STMPS2171 Contents 1 Block diagram 7 2 Pin settings 8 2.1 Pin connections . 8 2.2 Pin description 8 3 Functional description . 9 3.1 Fault blanking . 9 3.2 Overcurrent/overtemperature protection 9 3.3 Fault conditions . 9 3.4 Reversed current blocking 10 3.5 UVLO 10 4 Ambient temperature . 11 5 Maximum ratings . 12 5.1 Absolute maximum ratings 12 5.2 Recommended operating conditions 12 6 Electrical specifications . 13 7 Detail device characteristics . 16 7.1 STMPS2141, STMPS2151 additional electrical charts 16 7.1.1 Turn-on/off characteristics at V = 5.0 V 16 OUT 7.1.2 Turn-on/off characteristics at V = 3.0 V 17 OUT 7.1.3 UVLO . 18 7.1.4 OC protection characteristics 18 7.1.5 Other electrical characteristics 19 7.2 STMPS2161, STMPS2171 electrical charts 22 7.2.1 Turn-on/off characteristics at V = 5.0 V 22 OUT 7.2.2 Turn-on/off characteristics at V = 3.0 V 23 OUT 7.2.3 UVLO . 24 7.2.4 OC protection characteristics 24 7.2.5 Other electrical characteristics 25 2/37 Doc ID 13793 Rev 6