MIC2205-1.85YML TR Micrel Inc, MIC2205-1.85YML TR Datasheet - Page 3

• Manufacturer Part Number: MIC2205-1.85YML TR
• Description: 2MHz Synchronous Buck Regulator - Low Q Mode ( )
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of MIC2205-1.85YML TR

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.85V
• Current - Output: 600mA
• Frequency - Switching: 2MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MLF®, QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MIC2205-1.85YMLTR; MIC2205-1.85YMLTR

Absolute Maximum Ratings
Supply Voltage (V
Output Switch Voltage (V
Output Switch Current (I
Logic Input Voltage (V
Storage Temperature (T
ESD Rating
Electrical Characteristics
V
Parameter
Supply Voltage Range
Under-Voltage Lockout
Threshold
UVLO Hysteresis
Quiescent Current, PWM
mode
Quiescent Current, LDO
mode
Shutdown Current
[Adjustable] Feedback
Voltage
[Fixed Output] Voltages
FB pin input current
Current Limit in PWM Mode
Output Voltage Line
Regulation
Output Voltage Load
Regulation, PWM Mode
Output Voltage Load
Regulation, LDO Mode
Maximum Duty Cycle
PWM Switch ON-
Resistance
Oscillator Frequency
LOWQ threshold voltage
LOWQ Input Current
Enable Threshold
Enable Input Current
LDO Dropout Voltage
March 2005
IN
= V
EN
= V
(3)
LOWQ
....................................................... 3kV
=3.6V; L = 2.2µH; C
IN
) ............................................ +6V
EN
SW
,V
s
)................ -60°C to +150°C
SW
LOWQ
) ................................... 2A
) ............................... +6V
Condition
(turn-on)
V
V
V
± 1%
± 2% (over temperature)
Nominal V
V
V
V
20mA < I
100µA < I
V
V
I
I
I
SW
SW
OUT
FB
LOWQ
EN
FB
OUT
OUT
LOWQ
FB
) .............. -0.3V to V
= 50mA V
= -50mA V
= 0.9 * V
= 0.9 * V
≤ 0.4V
= 0V
= 50mA Note 5
> 2V; V
< 2V; V
OUT
= 0V
= 0V;I
(4)
LOAD
LOAD
= 2.2µF; T
OUT
(1)
OUT
NOM
NOM
IN
IN
< 300mA
tolerance
< 50mA
= V
= 2.7V to 5.5V; I
FB
FB
= 0mA
(not switching)
= 0.7V
= 1.1V
OUT
A
+300mV to 5.5V; I
= 25°C, unless noted. Bold values indicate –40°C< T
FB_NOM
FB_NOM
IN
3
LOAD
(High Side Switch)
(Low Side Switch)
= 100mA
Operating Ratings
Supply Voltage (V
Logic Input Voltage (V
Junction Temperature (T
Junction Thermal Resistance
LOAD
3x3 MLF-10L (θ
= 100mA
IN
)............................+2.7V to +5.5V
2.45
0.99
0.98
0.75
Min
JA
100
2.7
1.8
0.5
0.5
-1
-2
)................................... 60°C/W
EN
,V
J
(2)
) .............. –40°C to +125°C
LOWQ
2.55
0.01
0.13
0.85
0.85
Typ
100
690
110
0.2
0.1
0.4
0.4
0.1
0.1
16
1
1
1
2
) .............. -0.3V to V
J
www.micrel.com
< +125°C
M9999-031105
Max
2.65
1.01
1.02
1.85
900
5.5
0.5
0.2
2.2
1.3
1.3
29
+1
+2
5
2
2
Units
MHz
mV
mV
µA
µA
µA
nA
µA
µA
%
%
%
%
%
Ω
V
V
V
A
V
V
IN