MIC4680-1.8BM Micrel Inc, MIC4680-1.8BM Datasheet - Page 3

• Manufacturer Part Number: MIC4680-1.8BM
• Description: IC REG BUCK 200KHZ 1A 1.8V 8SOIC
• Manufacturer: Micrel Inc
• Series: SuperSwitcher™r
• Type: Step-Down (Buck)r

Specifications of MIC4680-1.8BM

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.8V
• Current - Output: 1A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 34 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

Absolute Maximum Ratings
Supply Voltage (V
Shutdown Voltage (V
Steady-State Output Switch Voltage (V
Feedback Voltage [Adjustable] (V
Storage Temperature (T
EDS Rating
Electrical Characteristics
V
Micrel, Inc.
Parameter
MIC4680 [Adjustable]
Feedback Voltage
Maximum Duty Cycle
Output Leakage Current
Quiescent Current
MIC4680-3.3
Output Voltage
Maximum Duty Cycle
Output Leakage Current
Quiescent Current
MIC4680-5.0
Output Voltage
Maximum Duty Cycle
Output Leakage Current
Quiescent Current
MIC4680/-3.3/-5.0
Frequency Fold Back
Oscillator Frequency
Saturation Voltage
Short Circuit
Current Limit
Standby Quiescent
Current
March 2008
IN
= 12V; I
LOAD
(5)
= 500mA; T
IN
)
(3)
SHDN
..................................................+38V
s
) .........................–65°C to +150°C
)............................. –0.3V to +38V
Condition
(±1%)
(±1%)
8V ≤ V
V
V
V
V
(±1%)
(±3%)
6V ≤ V
V
V
V
V
(±1%)
(±3%)
8V ≤ V
V
V
V
V
I
V
V
V
OUT
J
FB
IN
IN
FB
FB
IN
IN
FB
FB
IN
IN
FB
FB
SHDN
SHDN
= 25°C, bold values indicate –40°C ≤ T
= 34V, V
= 34V, V
= 34V, V
= 34V, V
= 34V, V
= 34V, V
= 1.0V
= 1.5V
= 2.5V
= 4.0V
= 4.0V
= 6.0V
= 0V, see Test Circuit
= 1A
= V
= 5V (regulator off)
IN
IN
IN
FB
≤ 34V, 0.1A ≤ I
≤ 34V, 0.1A ≤ I
≤ 34V, 0.1A ≤ I
IN
) ...........................+12V
SHDN
SHDN
SHDN
SHDN
SHDN
SHDN
(1)
SW
) ....................–1V
= 5V, V
= 5V, V
= 5V, V
= 5V, V
= 5V, V
= 5V, V
LOAD
LOAD
LOAD
SW
SW
SW
SW
SW
SW
= 0V
= –1V
= 0V
= –1V
= 0V
= –1V
≤ 1A, V
≤ 1A
≤ 1A
OUT
3
= 5V
Operating Ratings
Supply voltage (V
Junction Temperature (T
Package Thermal Resistance
SIOC (θ
J
≤ +125°C, Note 7; unless noted.
JA
)..........................................................63°C/W
IN
)
(4)
....................................... +4V to +34V
J
(2)
) ....................................... +125°C
1.217
1.205
1.193
1.180
3.266
3.201
3.168
3.135
4.950
4.800
4.750
4.85
Min
180
1.3
93
93
93
30
(6)
1.230
1.230
Typ
200
3.3
3.3
5.0
5.0
1.4
1.8
1.5
97
50
97
50
97
50
50
30
4
7
4
7
4
7
1.243
1.255
1.267
1.280
3.333
3.399
3.432
3.465
5.200
5.250
Max
5.05
5.15
500
500
500
100
220
100
1.8
2.5
M9999-032808
20
12
20
12
20
12
MIC4680
Units
kHz
kHz
mA
mA
mA
mA
mA
mA
µA
µA
µA
µA
µA
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V
V
A