MIC2174 Micrel Semiconductor, MIC2174 Datasheet - Page 3

• Manufacturer Part Number: MIC2174
• Description: Synchronous Buck Controller
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Absolute Maximum Ratings
IN, FB, EN to GND ........................................... -0.3V to +6V
BST to LX ......................................................... -0.3V to +6V
BST to GND ................................................... -0.3V to +46V
DH to LX.............................................-0.3V to (V
DL, COMP to GND ...............................-0.3V to (V
HSD to GND..................................................... -0.3V to 42V
PGND to GND ............................................... -0.3V to +0.3V
Junction Temperature .............................................. +150°C
Storage Temperature (T
Lead Temperature (soldering, 10sec) ........................ 260°C
Electrical Characteristics
V
Notes:
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 V
6. The current will come only from the internal 100kΩ pull-up resistor sitting on the EN Input and tied to IN.
7. The maximum V
Parameter
General
Operating Input Voltage (V
HSD Voltage Range (V
Quiescent Supply Current
Standby Supply Current
Under-voltage Lockout Trip Level
UVLO Hysteresis
DC-DC Controller
Output-Voltage Adjust Range
(V
Error Amplifier
FB Regulation Voltage
FB Regulation Voltage
FB Input Leakage Current
Current-Limit Threshold
Soft-Start
Soft-start Period
September 2009
BST
OUT
- V
)
(7)
LX
= 5V; T
OUT
A
= 25°C, unless noted. Bold values indicate -40°C ≤ T
value is limited by the Fixed T
HSD
S
)
)..........................-65°C to +150°C
IN
)
(5)
(4)
(V
V
0°C ≤ T
-40°C ≤ T
Condition
external MOSFET gate current)
EN = GND
V
V
IN
FB
FB
FB
(1)
= V
= 0.8V
= 0V
= 1.5V, output switching but excluding
BST
J
ON
≤ 85°C
J
= 5.5V, V
estimator which obtains V
≤ 125°C
(6)
BST
IN
+ 0.3V)
+ 0.3V)
HSD
= 40V, LX = unconnected,
3
Operating Ratings
Input Voltage (V
Supply Voltage (V
Operating Temperature Range ..................-40°C to +125°C
Junction Temperature (T
Junction Thermal Resistance
OUT
MSOP (θ
Continuous Power Dissipation (T
(derate 5.6mW/°C above 70°C)
as a divided by 6 value (1/6).
J
≤ +125°C.
JA
) ..................................................130.5°C/W
IN
HSD
) .......................................... 3.0V to 5.5V
) ....................................... 3.0V to 40V
Min
103
3.0
3.0
2.4
0.8
J
19
-1
-2
(2)
) .........................-40°C to +125°C
www.DataSheet4U.com
Typ
130
1.4
0.8
2.7
50
48
5
6
A
= 70°C) .......421mW
TH
.
M9999-090409-B
Max
500
162
5.5
3.0
40
77
2
3
1
2
MIC2174
Units
mA
mA
mV
mV
mV
ms
nA
%
%
V
V
V
V