MIC4680 Datasheet, PDF (3/16 Pages) Micrel Semiconductor – 1A 200kHz SuperSwitcher™ Buck Regulator Final Information

MIC4680
Absolute Maximum Ratings (Note 1)
Supply Voltage (V_IN), Note 3 ...................................... +38V
Shutdown Voltage (V_SHDN) .......................... –0.3V to +38V
Steady-State Output Switch Voltage (V_SW) .................. –1V
Feedback Voltage [Adjustable] (V_FB) .......................... +12V
Storage Temperature (T_S) ....................... –65°C to +150°C
ESD, Note 5
Micrel
Operating Ratings (Note 2)
Supply Voltage (V_IN), Note 4 .......................... +4V to +34V
Junction Temperature (T_J) ...................................... +125°C
Package Thermal Resistance (θ_JA), Note 6 ............ 63°C/W
Electrical Characteristics
V_IN = 12V; I_LOAD = 500mA; T_J = 25°C, bold values indicate –40°C ≤ T_J ≤ +125°C, Note 7; unless noted.
Parameter
Condition
Min
MIC4680 [Adjustable]
Feedback Voltage
(±1%)
(±2%)
1.217
1.205
8V ≤ V_IN ≤ 34V, 0.1A ≤ I_LOAD ≤ 1A, V_OUT = 5V
1.193
1.180
Maximum Duty Cycle
V_FB = 1.0V
93
Output Leakage Current
V_IN = 34V, V_SHDN = 5V, V_SW = 0V
V_IN = 34V, V_SHDN = 5V, V_SW = –1V
Quiescent Current
V_FB = 1.5V
MIC4680-3.3
Output Voltage
(±1%)
(±3%)
3.266
3.201
6V ≤ V_IN ≤ 34V, 0.1A ≤ I_LOAD ≤ 1A
3.168
3.135
Maximum Duty Cycle
V_FB = 2.5V
93
Output Leakage Current
V_IN = 34V, V_SHDN = 5V, V_SW = 0V
V_IN = 34V, V_SHDN = 5V, V_SW = –1V
Quiescent Current
V_FB = 4.0V
MIC4680-5.0
Output Voltage
(±1%)
(±3%)
4.950
4.85
8V ≤ V_IN ≤ 34V, 0.1A ≤ I_LOAD ≤ 1A
4.800
4.750
Maximum Duty Cycle
V_FB = 4.0V
93
Output Leakage Current
V_IN = 34V, V_SHDN = 5V, V_SW = 0V
V_IN = 34V, V_SHDN = 5V, V_SW = –1V
Quiescent Current
V_FB = 6.0V
Typ
1.230
1.230
97
50
4
7
3.3
3.3
97
50
4
7
5.0
5.0
97
50
4
7
Max
1.243
1.255
1.267
1.280
500
20
12
3.333
3.399
3.432
3.465
500
20
12
5.05
5.15
5.200
5.250
500
20
12
Units
V
V
V
V
%
µA
mA
mA
V
V
V
V
%
µA
mA
mA
V
V
V
V
%
µA
mA
mA
June 2000
3
MIC4680