MIC2184YM TR Micrel Inc, MIC2184YM TR Datasheet
MIC2184YM TR
Specifications of MIC2184YM TR
MIC2184YMTR
Related parts for MIC2184YM TR
MIC2184YM TR Summary of contents
Page 1
MIC2184 General Description Micrel’s MIC2184 is a high efficiency PWM buck control IC. With its wide input voltage range of 2.9V to 14V, the MIC2184 can be used to efficiently step voltages down 2-cell Li Ion battery ...
Page 2
MIC2184 Ordering Information Part Number Standard Pb-Free MIC2184BM MIC2184YM MIC2184BQS MIC2184YQS Pin Configuration M9999-042205 Output Voltage Frequency Adj. 400KHz Adj. 400KHz VINA 1 16 VINP FreqOut 2 15 FREQ OUTP COMP 4 13 VREF SGND 5 12 ...
Page 3
MIC2184 Pin Description Pin Number Pin Name 1 VINA 2 FreqOut COMP 5 SGND EN/UVLO 8 CSL 9 CSH 10 VDD 11 SYNC 12 PGND 13 VREF 14 OUTP 15 FREQ/2 16 VINP April ...
Page 4
MIC2184 Absolute Maximum Ratings Supply Voltage ( ......................................... 15V IN IN Digital Supply Voltage (V ) ........................................... 7V DD Comp Pin Voltage (V ) ............................ –0.3V to +3V COMP Feedback Pin Voltage (V ) .......................... –0.3V to ...
Page 5
MIC2184 Parameter Condiion Soft Start Soft Start Current Current Limit Current Limit Threshold Voltage Voltage on CSH-CSL to trip current limit Error Amplifier Error Amplifier Gain Current Amplifier Current Amplifier Gain Oscillator Section Oscillator Frequency ( Maximum Duty ...
Page 6
MIC2184 Typical Characteristics Quiescent Current vs. Input Voltage 4.5 400kHz VINA VINP 3.5 3 2.5 2 200kHz 1.5 1 0.5 I STANDBY INPUT VOLTAGE (V) V vs. Load ...
Page 7
MIC2184 OUTP Drive Impedance vs. Input Voltage 4 3.5 3 2.5 SINK 2 1.5 SOURCE INPUT VOLTAGE (V) April 2005 7 Micrel, Inc. M9999-042205 ...
Page 8
MIC2184 Functional Diagram C DECOUP EN/UVLO 7 VDD 10 VDD fs/4 SYNC 11 FREQ/2 15 OSC FreqOut 2 ÷2 PWM COMPARATOR SS 3 COMP 4 VREF 13 V REF Functional Characteristics Controller Overview and Functional Description The MIC2184 is a ...
Page 9
MIC2184 The MIC2184 controller is broken down into 7 functions. • Control loop • PWM operation • Current mode control • Current limit • Reference, enable and UVLO • FreqOut • MOSFET gate drive • Oscillator and Sync • Soft-start ...
Page 10
MIC2184 MIC2184 1.5V Typical EN/UVLO 140mV (7) R2 Hysteresis (typical) Figure 3. UVLO Circuitry The line voltage turn on trip point is × INPUT ENABLE _ THRESHOLD where the voltage level of ...
Page 11
MIC2184 fied free running frequency of the MIC2184. If the synchroniz- ing frequency is lower, double pulsing of the gate drive outputs will occur. When not used, the sync pin must be connected to ground. The maximum recommended output switching ...
Page 12
... SEATING 0.0688 (1.748) PLANE 0.0532 (1.351) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...