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MIC2145YMM

P1-P3P4-P6P7-P9P10-P12P13-P15
MIC2145 Micrel, Inc.
M9999-042205 4 April 2005
Typical Characteristics
50
60
70
80
90
100
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
EFFICIENCY (%)
OUTPUT CURRENT (A)
Efficiency-Basic
Confi
g
uration
V
IN
= 3.3V
V
OUT
= 10V
L = 10µH
50
60
70
80
90
100
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
EFFICIENCY (%)
OUTPUT CURRENT (A)
Efficiency-Bootstrapped
Confi
g
uration
V
IN
=
3.3V
V
OUT
=
10V
L
=
10µH
9.2
9.4
9.6
9.8
10.0
10.2
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
V
OUT
(V)
OUTPUT CURRENT (A)
Load Re
g
ulation
V
IN
= 3.6V
L = 10µH
14.0
14.2
14.4
14.6
14.8
15.0
15.2
15.4
15.6
15.8
16.0
2 4681012 14 16
V
OUT
(V)
V
DD
(V)
Line Re
g
ulation
L = 10µH
I
OUT
= 10mA
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
024681012141618
SWITCH ON-RESISTANCE (Ω)
V
DD
(V)
Switch On-Resistance
vs. V
DD
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
02468101214 16 18
QUIESCENT CURRENT (Ω)
V
DD
(V)
Quiescent Current
vs. V
DD
1.05
1.06
1.07
1.08
1.09
1.1
-40 -20 0 20 40 60 80 100
FEEDBACK VOLTAGE (V)
TEMPERATURE (°C)
Feedback Voltage
vs. Temperature
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
-40 -20 0 20 40 60 80 100
FEEDBACK CURRENT (µA)
TEMPERATURE (°C)
Feedback Current
vs. Tem
p
erature
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
-40 -20 0 20 40 60 80 100
OFF TIME (µs)
TEMPERATURE (°C)
Off Time
vs. Temperature
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
-40 -20 0 20 40 60 80 100
SHUTDOWN CURRENT (µA)
TEMPERATURE (°C)
Shutdown Current
vs. Tem
p
erature
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
-40 -20 0 20 40 60 80 100
QUIESCENT CURRENT (mA)
TEMPERATURE (°C)
Quiescent Current
vs. Tem
p
erature
V
IN
= 3.6V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-40 -20 0 20 40 60 80 100
SWITCH ON-RESISTANCE (Ω)
TEMPERATURE (°C)
Switch On-Resistance
vs. Temperature
April 2005 5 M9999-042205
MIC2145 Micrel, Inc.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-40 -20 0 20 40 60 80 100
PEAK CURRENT LIMIT (A)
TEMPERATURE (°C)
Peak Current Limit
vs. Temperature
V
IN
= 3.6V
V
OUT
= 10V
L = 10µH
R
SET
= 200
R
SET
= 500
R
SET
= 1k
R
SET
= 10k
0
2
4
6
8
10
12
14
-40 -20 0 20 40 60 80 100
SOFT START CURRENT (µA)
TEMPERATURE (°C)
Soft Start Current
vs. Tem
p
erature
V
IN
= 3.6V
400
600
800
1000
1200
1400
1600
1800
2000
100 1000 10000 100000
PEAK CURRENT LIMIT (mA)
RSET(Ω)
Peak Current Limit
vs. RSET
15V
5.0V
4.2V
2.4V
3.0V
3.3V
3.6V
8.0V
10V
12V
VOUT/VIN > 1.25
L = 10µH
VIN =
MIC2145 Micrel, Inc.
M9999-042205 6 April 2005
Functional Diagram
SGND
V
IN
VDD
R1
C
OUT
C
FF
C
IN
D1
10µH
L1
V
OUT
R2
PGND
FB
Current Limit
Comparator
Feedback
Comparator
POWER
MOSFET
One Shot
800nS
/S
EN
SW
RSET
SS
/R/Q
Thermal
Shutdown
On(/Off)
6
3
2
1
7
4
8
5
C
SS
V
REF
R
SET
Soft
Start
1
R1
R2
+
V1.08
OUT
=
Figure 1. Block Diagram
P1-P3P4-P6P7-P9P10-P12P13-P15

MIC2145YMM

Mfr. #:
Buy MIC2145YMM
Manufacturer:
Microchip Technology / Micrel
Description:
Switching Voltage Regulators Boost Regulator
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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