Product Summary

The MIC1557BM5 is a from Micrel Semiconductor ittyBitty RC timer/oscillator . The MIC1557BM5 is designed to provide rail-to-rail pulses for precise time delay or frequency generation. Applications are (1)Precision timer; (2)Pulse generation; (3)Sequential timing; (4)Time-delay generation; (5)Missing pulse detector; (6)Micropower oscillator to 5MHz; (7)Charge-pump driver; (8)LED blinker; (9)Voltage converter; (10)Linear sweep generator; (11)Variable frequency and duty cycle oscillator; (12)Isolated feedback for power supplies.

Parametrics

MIC1557BM5 absolute maximum ratings: (1)Supply Voltage (VS): +22V; (2)Threshold Voltage (VTHR, VT/T): +22V; (3)Trigger Voltage (VTRG, VT/T): +22V; (4)Lead Temperature (soldering 10sec): 300°C; (5)Supply Voltage (VS): +2.7V to +18V; (6)Ambient Temperature Range (TA): –40°C to +85°C; (7)Package Thermal Resistance (qJA): 220°C/W; (8)Package Thermal Resistance (qJC): 130°C/W.

Features

MIC1557BM5 features: (1)+2.7V to +18V operation; (2)Low current <1mA typical shutdown mode (MIC1557)200mA typical (TRG and THR low)at 3V supply; (3)Timing from microseconds to hours; (4)“Zero” leakage trigger and threshold inputs; (5)50% square wave with one Resistor, one Capacitor; (6)Threshold input precedence over trigger input; (7)<15W output on resistance; (8)No output cross-conduction current spikes; (9)<0.005%/°C temperature stability; (10)<0.055%/V supply stability; (11)Small SOT-23-5 surface mount package.

Diagrams

MIC1557BM5 pin connection 

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MIC1557BM5 TR
MIC1557BM5 TR


IC OSC MONO TIMING 5MHZ SOT23-5

Data Sheet

Negotiable 
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MIC1232M
MIC1232M


IC SUPERVISOR MULTIFUNC 5V 8SOIC

Data Sheet

Negotiable 
MIC1232M TR
MIC1232M TR


IC SUPERVISOR MULTIFUNC 5V 8SOIC

Data Sheet

Negotiable 
MIC1232MY
MIC1232MY


IC SUPERVISOR MULTIFUNCT 8-SOIC

Data Sheet

0-1235: $0.50
MIC1232MY TR
MIC1232MY TR


IC SUPERVI MULTIFUNC 4.75V 8SOIC

Data Sheet

0-1: $1.22
1-10: $1.04
10-25: $0.94
25-100: $0.85
100-250: $0.77
250-500: $0.66
500-1000: $0.56
MIC1232N
MIC1232N


IC SUPERVISOR MULTIFUNC 5V 8DIP

Data Sheet

Negotiable 
MIC1555BM5 TR
MIC1555BM5 TR


IC OSC MONO TIMING 5MHZ SOT23-5

Data Sheet

Negotiable