MIC2164-2YMM 데이터 시트보기 (PDF) - Micrel

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MIC2164-2YMM

Synchronous Buck Controllers Featuring Adaptive On-Time Control 28V Input, Constant Frequency

Micrel 

Micrel, Inc.

MIC2164/-2/-3/C

Electrical Characteristics(4) (Continued)

VBST − VLX = 5V; TA = +25°C, unless noted. Bold values indicate −40°C ≤ TJ ≤ +125°C.

Parameter

Condition

Min.

Typ. Max.

MIC2164/ MIC2164C

87

Maximum Duty Cycle (9)

MIC2164-2

74

MIC2164-3

66

Minimum Duty Cycle

Measured at DH, VFB = 1V

0

FET Drives

DH, DL Output Low Voltage

DH, DL Output High Voltage

DH On-Resistance, High State

ISINK = 10mA

ISOURCE = 10mA

0.1

VIN − 0.1V

or

VBST − 0.1V

2.1

3.3

DH On-Resistance, Low State

1.8

3.3

DL On-Resistance, High State

1.8

3.3

DL On-Resistance, Low State

1.2

2.3

LX Leakage Current

VLX = 28V, VIN = 5.5V,VBST = 33.5V

50

HSD Leakage Current

VLX = 28V, VIN = 5.5V,VBST = 33.5V

20

Thermal Protection

Over-Temperature Shutdown

155

Over-Temperature Shutdown

Hysteresis

10

Shutdown Control

EN Logic Level Low

EN Logic Level High

EN Pull-Up Current

3V < VIN <5.5V

3V < VIN <5.5V

0.4

0.8

0.9

1.2

50

Note:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

4. Specification for packaged product only.

5. The application is fully functional at low IN (supply of the control section) if the external MOSFETs have enough low voltage VTH.

6. The current will come only from the internal 100kΩ pull-up resistor sitting on the EN Input and tied to IN.

8. Measured in test mode.

9. Measured at DH. The maximum duty cycle is limited by the fixed mandatory off time TOFF of typical 363ns.

Units

%

%

V

V

Ω

Ω

Ω

Ω

µA

µA

°C

°C

V

V

µA

September 2010

5

M9999-091310-D

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