mic4782 Micrel Semiconductor, mic4782 Datasheet - Page 4

• Manufacturer Part Number: mic4782
• Description: 1.8 Mhz Dual 2a Integrated Switch Buck Regulator
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Absolute Maximum Ratings
Supply Voltage (V
Output Switch Voltage (V
Output Switch Current (I
Input Voltage (V
Storage Temperature (T
Junction Temperature ................................................ 150°C
Lead Temperature (soldering, 10sec.)....................... 260°C
ESD Rating
Electrical Characteristics
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.
August 2009
V
Parameter
Supply Voltage Range
Under-Voltage Lockout Threshold
UVLO Hysteresis
Quiescent Current
Shutdown Current
[Adjustable] Feedback Voltage
FB pin input current
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
Maximum Duty Cycle
Switch ON-Resistance
Oscillator Frequency
Switching Phase
Enable Threshold
Enable Hysteresis
Enable Input Current
Over-Temperature Shutdown
Over-Temperature Hysteresis
IN
= V
EN
= 3.6V; L = 1.0µH; C
(3)
................................................................. 2KV
EN
IN
), (V
) ..................................... –0.3V to +6.5V
FB
SW1,
s
), (V
) .........................–60°C to +150°C
SW1,
I
BIAS
SW2
V
SW2
OUT
) .......................-0.3V to V
)………...Internally Limited
).............. –0.3V to +6.5V
= 4.7µF; T
(4)
Condition
Turn-on
V
V
V
± 3%, I
V
V
20mA < I
V
I
SW
FB
FB
EN
FB
IN
FB
(1)
= 3V to 6V; I
= 50mA V
= 0.9 * V
= 0.9 * V
= 0.9 * V
≤ 0.9 * V
= 0V
LOAD
LOAD
A
= 100µA
= 25°C, unless noted. Bold values indicate –20°C< T
NOM
NOM
NOM
NOM
< 2A
FB
LOAD
(not switching); V
(not switching); V
=GND
= 100 µA
IN
4
Operating Ratings
Supply Voltage (V
Logic Input Voltage (V
Junction Temperature (T
Junction Thermal Resistance
IN
IN
3mm x 3mm MLF
= 6V
= 3.6V
IN
)........................................... +3V to +6V
®
EN
(θ
) ....................................... 0V to V
J
JA
(2)
) ........................ –20°C to +125°C
2.45
Min
589
100
).....................................60°C/W
3.0
2.5
0.5
0.07
Typ
100
607
155
180
153
1.4
1.0
1.6
4.3
0.2
1.8
0.9
0.1
2.6
55
18
1
J
< +125°C.
M9999-081709-D
Max
625
6.0
2.7
3.0
1.3
MIC4782
Units
MHz
Deg
mV
mA
mA
mV
mΩ
mV
µA
µA
nA
°C
°C
%
%
%
V
V
A
V
IN