MIC2164-2YMM Micrel Inc, MIC2164-2YMM Datasheet - Page 2

• Manufacturer Part Number: MIC2164-2YMM
• Description: IC PWM BUCK CNTLLR 10MSOP
• Manufacturer: Micrel Inc
• Series: Hyper Speed Control™r
• Type: Step-Down (Buck)r

Specifications of MIC2164-2YMM

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5.5 V
• Frequency - Switching: 600kHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Voltage - Supply: 3 V ~ 28 V
• Frequency-max: 750kHz
• Duty Cycle: 74%
• Pwm Type: Controller
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-3543-5

Micrel, Inc.
Ordering Information
Pin Configuration
Pin Description
Pin Number
September 2010
Part Number
MIC2164YMM
MIC2164-2YMM
MIC2164-3YMM
MIC2164CYMM
1
2
3
4
5
6
7
8
Pin Name
PGND
GND
HSD
DH
EN
FB
DL
IN
Adjustable
Adjustable
Adjustable
Adjustable
Voltage
Pin Function
High-Side N-MOSFET Drain Connection (input): Power to the drain of the external high-side N-channel
MOSFET. The HSD operating voltage range is from 3V to 28V. Input capacitors between HSD and the
power ground (PGND) are required.
Enable (input): A logic level control of the output. The EN pin is CMOS-compatible. Logic high or floating
= enable, logic low = shutdown. In the off state, supply current of the device is greatly reduced (typically
0.8mA).
Feedback (input): Input to the transconductance amplifier of the control loop. The FB pin is regulated to
0.8V. A resistor divider connecting the feedback to the output is used to adjust the desired output
voltage.
Signal ground. GND is the ground path for the device input voltage V
for the signal ground should be separate from the power ground (PGND) loop.
Input Voltage (input): Power to the internal reference and control sections of the MIC2164/-2/-3. The IN
operating voltage range is from 3V to 5.5V. A 1µF and 0.1µF ceramic capacitors from IN to GND are
recommended for clean operation.
Low-Side Drive (output): High-current driver output for external low-side MOSFET. The DL driving
voltage swings from ground-to-IN.
Power Ground. PGND is the ground path for the MIC2164/-2/-3 buck converter power stage. The PGND
pin connects to the sources of low-side N-Channel MOSFETs, the negative terminals of input capacitors,
and the negative terminals of output capacitors. The loop for the power ground should be as small as
possible and separate from the Signal ground (GND) loop.
High-Side Drive (output): High-current driver output for external high-side MOSFET. The DH driving
voltage is floating on the switch node voltage (LX). It swings from ground to V
Adding a small resistor between DH pin and the gate of the high-side N-channel MOSFETs can slow
down the turn-on and turn-off time of the MOSFETs.
Frequency
Switching
300kHz
600kHz
270kHz
1MHz
Accuracy
±1%
±1%
±1%
±3%
10-Pin MSOP (MM)
Junction Temperature Range
2
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
IN
and the control circuitry. The loop
10-pin MSOP
10-pin MSOP
10-pin MSOP
10-pin MSOP
Package
IN
minus the diode drop.
MIC2164/-2/-3/C
M9999-091310-D
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free