MIC2044-1YTS TR Micrel Inc, MIC2044-1YTS TR Datasheet
MIC2044-1YTS TR
Specifications of MIC2044-1YTS TR
MIC2044-1YTSTR
Related parts for MIC2044-1YTS TR
MIC2044-1YTS TR Summary of contents
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... MIC2044/2045 General Description The MIC2044 and MIC2045 are high-side MOSFET switches optimized for general purpose power distribution applications that require circuit protection. These devices switch up to 5.5V and as low as 0.8V while offering both programmable current limiting and thermal shutdown to protect the device and 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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... SET sets the current limit threshold as I LIMIT factor specified in the “Electrical Characteristics” table. For the MIC2044/45, the continuous output current range 6A. Undervoltage Lockout Adjust (Input): With this pin left open, the UVLO threshold is internally set to 1.45V. When the switching voltage (V below 1.5V, connecting an external resistive divider to this input will lower the UVLO threshold. The total resistance of the divider must be less than 200kΩ ...
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... Undervoltage Lockout Threshold UV V Undervoltage Lockout UVHYST Threshold Hysteresis V UVLO Adjust Pin Threshold Voltage UVINTH V UVLO Adjust Pin Threshold Hysteresis UVINHYST Overtemperature Threshold MIC2044/2045 Operating Ratings (Note 1) 6V Supply Voltage V ............................................................... 0. BIAS Continuous Output Current ................................... Ambient Temperature (T Package Thermal Resistance (R TSSOP ................................................................ 85° ...
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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 20kΩ 3 /FAULT 5 UVLOIN PWRGD 4 SLEW ILIM GND 10 *C SLEW use multiple values ...
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... TEMPERATURE (°C) Power-Good Reference Threshold vs. Temperature 230 225 220 V @ 1.6V to 5.5V TH 215 210 -40 - 100 TEMPERATURE (°C) V Reverse Current Flow BIAS vs. Output Voltage GND 1.6V BIAS –V (V) OUT BIAS SLEW Voltage vs. Temperature BIAS BIAS 1.6V IN BIAS 0 -40 - 100 TEMPERATURE (°C) MIC2044/2045 ...
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... MIC2044/2045 Functional Characteristics 5V Turn-On V TIME (1ms/div.) Latched Output MIC2045 BIAS R LOAD C LOAD R SET TIME (5ms/div.) Current Limit Response TIME (5ms/div.) MIC2044/2045 = BIAS R = 1.65 m LOAD LOAD R = 100 SET = 5.0V = 1.8Ω = 47µF = 220Ω 5.0V IN BIAS R = 1.2Ω LOAD C = 47µF ...
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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 BIAS R = 2Ω LOAD C = 47µF LOAD R = 220Ω SET TIME (100ms/div.) MIC2044/2045 Micrel ...
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... MIC2044/2045 Functional Diagram 1 PWRGD 15 PGREF V IN 5.3x 5 UVLOIN 1x 4 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 ...
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... If the fault condition persists longer than the delay period, typically 32ms, then the /FAULT output asserts low. At this point, the MIC2044 will continue to supply current to the load at the limiting value (I will latch off its output. ...
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... The MIC2044 automatically resets its output and resumes supplying current to the load when the die temperature drops to 120°C. If the fault is still present, the MIC2044 will quickly re-heat and shut down again. This process of turning ON-OFF-ON is called thermal cycling and will continue as long as the power switch is enabled while the fault or excessive load is present ...
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... With VOUT cycling on and off, the MIC2044 will reset the /FAULT while in an overtemperature fault condition if V allowed to swing below ground. The inductance present at the output must be neutralized by capacitance in order to ensure that the output does not fall below ground ...
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... Under heavy loads, the switched current may cause the devices to heat up considerably. The following list contains some useful suggestions for PCB layout design of the MIC2044/45 in order to prevent the die from overheating under normal operating conditions. MIC2044/2045 MIC2044-1BTS ...
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... Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify January 2005 16-Pin TSSOP (TS (408) 944-0970 FAX WEB Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 15 Rev. 01 http://www.micrel.com MIC2044/2045 Micrel ...