MIC2045-2BTS Micrel Inc, MIC2045-2BTS Datasheet
MIC2045-2BTS
Specifications of MIC2045-2BTS
Related parts for MIC2045-2BTS
MIC2045-2BTS Summary of contents
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... Additionally, for tighter control over inrush current during start up, the output slew-rate may be adjusted by an external capacitor. The MIC2045 features a auto-reset circuit breaker that latches the output OFF upon detecting an overcurrent condition lasting more than 32ms. The output is reset by removing or reducing the load. ...
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... MIC2044/2045 Ordering Information Part Number Standard Pb-Free MIC2044-1BTS MIC2044-1YTS MIC2044-2BTS MIC2044-2YTS MIC2045-1BTS MIC2045-1YTS MIC2045-2BTS MIC2045-2YTS Pin Configuration MIC2044/2045 Enable Circuit Breaker Active-High Active-Low Active-High X Active-Low X PWRGD 1 16 VIN PGREF /FAULT 3 14 VOUT SLEW 4 13 VIN UVLOIN 5 12 VOUT ILIM 6 11 VIN ...
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MIC2044/2045 Pin Description Pin Number Pin Name 1 PWRGD /FAULT 10 GND 4 SLEW 6 ILIM 5 UVLOIN 7,11,13,16 VIN 9,12,14 VOUT 8 VBIAS 15 PGREF January 2005 Pin Function Power-Good (Output): Open drain N-Channel device, active ...
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... IN BIAS I = 500mA OUT Output off V = 3V, 5V, 0.5V ≤ OUT 1A ≤ I ≤ 6A OUT 1.6V to 5.5V IN BIAS V = 0. rising (MIC2045) OUT Output latched off (MIC2045) I (/FAULT) = 15mA OL I (PWRGD) = 5mA FAULT PWRGD V rising IN V falling IN V rising IN V falling IN T increasing ...
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... IN BIAS R = 10Ω 1µF LOAD LOAD R = 10Ω 1µF LOAD LOAD R = 10Ω 1µF LOAD LOAD R = 10Ω 1µF LOAD LOAD > 4.0V for MIC2044/MIC2045 – CLF/R . LIM SET 50 10% (a) MIC2044/45-1 50 10% (b) MIC2044/45-2 Figure 1. Turn-On/Turn-Off Delay Increase the load 0.2V I LIMIT t FLAG ...
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MIC2044/2045 Test Circuit 10µF R3 75kΩ R4 68kΩ *R and C SET (See specific response plots) MIC2044/2045 C1 0.1µF C2 MIC2044/45-xBTS 0.1µF 8 VBIAS VOUT R1 20kΩ 7, 11, 13, 16 VIN PGREF R2 2 ...
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MIC2044/2045 Typical Characteristics Supply Current vs. Temperature 300 275 5.5V 250 IN BIAS 225 BIAS 200 175 150 1.6V 125 IN BIAS 100 -40 -20 0 ...
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... SET 8 5V Turn-Off 5.0V IN BIAS R = 1.65V LOAD LOAD 100 SET m TIME (500 s/div.) Latched Output Reset MIC2045 4.82V 5.0V IN BIAS R toggles from 2Ω to OPEN LOAD C = 47µF LOAD R = 220Ω SET TIME (50ms/div.) UVLO Response 1.45V V ramps 5Ω LOAD C = 47µ ...
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MIC2044/2045 Functional Characteristics (continued) Output Slew Response TIME (2.5ms/div.) January 2005 5Ω LOAD C = 47µF LOAD C = 0.033µF SLEW R = 220Ω SET 9 Thermal Shutdown Response 5.0V IN ...
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... SLEW Input 2 EN Logic OSC MIC2044/45 MIC2044/2045 V = 230mV REF Bandgap Reference Thermal Shutdown + Gate UVLO Control + Charge Pump Power-On Latch Reset (MIC2045 VBIAS 7,11,13,16 Power-Off VIN Reset 9,12,14 VOUT Replica Amp + Current Limit I 6 ILIM LIM + Delay (32ms) Open Load Detect ...
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... MIC2044/2045 Functional Description The MIC2044 and MIC2045 are high-side N-Channel switches equipped with programmable current limit for use in general purpose power distribution applications. The switches, available with active-high or active-low enable inputs, provide output slew-rate control and circuit protection via thermal shutdown and an optional output latch during overcurrent conditions ...
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... MOSFET being shut off. Circuit Breaker Function (MIC2045) The MIC2045 is designed to shut off all power to the load when a fault condition occurs, just as a circuit breaker would do. In this case, a fault condition is deemed to be anytime the output current exceeds the current limit for more than the flag delay period, nominally 32ms ...
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... VOUT) differential voltage and concludes a fault condition is present if the differential voltage exceeds 200mV for more than the flag delay period. For the MIC2045, the /FAULT will assert and the output will latch off if the output is not within 200mV of the input before the flag delay times out. ...
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... This same feature also can be used for soft-start requirements. PCB Layout Recommendations The MIC2044 and MIC2045 have very low on-resistance, typically 20mΩ, and the switches can provide continuous output current. Under heavy loads, the switched current may cause the devices to heat up considerably ...
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MIC2044/2045 Package Information MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel ...