MIC2602 Datasheet PDF - MICREL

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MIC2602
MICREL

Part Number MIC2602
Description 1.2A - 1.2MHz/2MHz Wide Input Range Integrated Switch Boost Regulator
Page 13 Pages


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MIC2601/2
1.2A, 1.2MHz/2MHz Wide Input Range
Integrated Switch Boost Regulator
General Description
The MIC2601/2 is a 1.2MHz/2MHz, PWM DC/DC boost
switching regulator available in a 2mm x 2mm MLF®
package. High power density is achieved with the
MIC2601/2’s internal 40V/1.2A switch, allowing it to power
large loads in a tiny footprint.
The MIC2601/2 implements constant frequency
1.2MHz/2MHz PWM current mode control. The MIC2601/2
offers internal compensation that provides excellent
transient response and output regulation performance. The
high frequency operation saves board space by allowing
small, low-profile external components. The fixed
frequency PWM scheme also reduces spurious switching
noise and ripple to the input power source.
Soft start reduces in rush current and is programmable via
external capacitor.
The MIC2601/2 is available in a 2mm x 2mm 8-pin MLF®
leadless package. Both devices have an output over-
voltage protection feature.
The MIC2601/2 has an operating junction temperature
range of –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Wide input voltage range: 4.5V to 20V
Output voltage adjustable to 40V
1.2A switch current
MIC2601 operates at 1.2MHz
MIC2602 operates at 2MHz
Stable with small size ceramic capacitors
High efficiency
Programmable soft start
<10µA shutdown current
UVLO
Output over-voltage protection
Over temperature shutdown
8-pin 2mm x 2mm MLF® package
–40°C to +125°C junction temperature range
Applications
Multimedia STB/Antenna
Broadband communications
TFT-LCD bias supplies
Bias supply
Positive output regulators
SEPIC converters
DSL applications
Local boost regulators
___________________________________________________________________________________________________________
Typical Application
10µH
VIN = 12V
2.2µF
www.DataSheet4U.co0m.1µF
MIC2601/2
VIN SW
EN FB
VDD
SS
AGND PGND
VOUT
18V, 500mA
6.65K
0.1µF
10µF
18VOUT Efficiency
100
90
80 8VIN
70
12VIN
60
50
40
30
20
10
00 100 200 300 400 500 600 700 800
LOAD CURRENT (mA)
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2009
M9999-090909-A



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Micrel, Inc.
MIC2601/2
Ordering Information
Part Number
MIC2601YML
MIC2602YML
Marking
Code(1)
RD1
RE1
Frequency
1.2MHz
2MHz
Output Over
Voltage Protection
40V
40V
Temperature Range
–40° to +125°C
–40° to +125°C
Package(2)
8-Pin 2mm x 2mm MLF®
8-Pin 2mm x 2mm MLF®
Notes
1. Overbar ( ) symbol my not be to scale.
2. MLF® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Lead Finish
Pb-Free
Pb-Free
Pin Configuration
VIN 1
VDD 2
EN 3
AGND 4
8 PGND
7 SW
6 FB
5 SS
8-Pin 2mm x 2mm MLF® (ML)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
EP
Pin Name
VIN
VDD
EN
AGND
SS
FB
SW
PGND
GND
Pin Function
Supply (Input): 4.5V to 20V input voltage.
Internal regulator. VDD should be connected to VIN when VIN 7V.
Enable (Input): Logic high enables regulator. Logic low shuts down regulator.
Analog Ground
Soft Start
Feedback (Input): 1.25V output voltage sense node. VOUT = 1.25V ( 1 + R1/R2)
Switch Node (Input): Internal power BIPOLAR collector.
Power ground
Ground (Return): Exposed backside pad. Internally fused to AGND and PGND
pins.
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September 2009
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Micrel, Inc.
MIC2601/2
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .......................................................22V
Switch Voltage (VSW)....................................... –0.3V to 40V
Enable Voltage (VEN)......................................... –0.3V to VIN
FB Voltage (VFB)...............................................................6V
Ambient Storage Temperature (Ts) ...........–65°C to +150°C
Lead Temperature (soldering 10sec)......................... 260°C
ESD Rating..................................................................... 2kV
Operating Ratings(2)
Supply Voltage (VIN).......................................... 4.5V to 20V
Enable Voltage (VEN)............................................ 0V to 20V
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
2mm x 2mm MLF-8 (θJA) ...................................90°C/W
2mm x 2mm MLF-8 (θJC) ...................................45°C/W
Electrical Characteristics(3)
TA = 25°C, VIN = VEN = 12V; unless otherwise noted. Bold values indicate –40°C TJ +125°C.
Symbol
VIN
VDD
VULVO
IQ
ISD
VFB
IFB
SSR
DMAX
ISW
VSW
ISW
VEN
IEN
fSW
VOVP
TJ
Parameter
Input Voltage Range
Internal Regulated Voltage
Under-voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
Feedback Input Current
Line Regulation
Load Regulation
Internal Soft Start Resistor
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Enable Threshold
Enable Pin Current
Oscillator Frequency (MIC2601)
Oscillator Frequency (MIC2602)
Output Over-voltage Protection
Over-temperature Threshold
Shutdown
Condition
Note 4
For VDD
VFB = 2V (not switching)
VEN = 0V, Note 5
(±2%)
(±3%) (over temperature)
VFB = 1.25V
8V VIN 14V, VOUT = 18V
5mA IOUT 400mA, VOUT = 18V, Note 6
MIC2601
MIC2602
Note 6
ISW = 1.2A
VEN = 0V, VSW = 18V
Turn ON
Turn OFF
VEN = 12V
15% Over programmed VOUT (rising)
Hysteresis
Min
4.5
1.8
1.235
1.222
85
80
1.2
1.5
Typ
6.0
2.1
4.2
0.08
1.26
–550
0.04
0.1
15
1.7
500
0.01
18.5
1.02 1.12
1.7 1.92
10 15
150
10
Max
20
2.4
6
2
1.285
1.298
1
5
0.3
40
1.38
2.3
20
Units
V
V
V
mA
µA
V
V
nA
%
%
k
%
%
A
mV
µA
V
V
µA
MHz
MHz
%
°C
°C
Notes:
1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating
the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(Max), the
wwwjtue.nDmcaptietoarnaS-thtuoer-eae,tm4abUnide.cntoht methreergmualal troersiwstilal ngcoei,nθtoJAth, earnmdathl sehaumtdboiwennt. temperature, TA. The maximum allowable power dissipation will result in excessive die
2. The device is not guaranteed to function outside its operating rating.
3. Specification for packaged product only.
4. Connect VDD pin to VIN pin when VIN 7V.
5. ISD = IVIN.
6. Guaranteed by design.
September 2009
3 M9999-090909-A



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Micrel, Inc.
Typical Characteristics
Quiescent Current
vs. Input Voltage
7
6
5
4
3
2
1
00 246
No Switching FB Pin @ 2V
81 01 21 41 61 8
INPUT VOLTAGE (V)
Max Duty Cycle
vs. Temperature
100
98
96
94
92
90
88
86
84
82
EN = 20V
VIN = 20V
8-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Switch Current Limit
vs. Input Voltage
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.646
EN = VIN
81 01 21 41 61 82 0
INPUT VOLTAGE (V)
1.270
Feedback Voltage
vs. Temperature
1.265
1.260
1.255
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1.250
1.245
VIN = 12V
Load = 100mA
1.24-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
September 2009
Quiescent Current
vs. Temperature
4.5
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6 No Switching FB Pin @ 2V
3.-540 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Switch Saturation Voltage
2700
2430
2160
1890
vs. Input Voltage
–0.1A –0.2A –0.3A –0.4A
–0.5A –0.6A –0.7A –0.8A
–0.9A –1.0A –1.1A –1.2A
–1.3A –1.4A –1.5A –1.6A
–1.7A
1620
1350
1080
810
540
270
046 81 01 21 41 61 82 0
INPUT VOLTAGE (V)
Switch Current Limit
vs. Temperature
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.-040 -20
0
VIN = 12V
20 40 60 80 100 120
TEMPERATURE (°C)
Enable Threshold ON
1.290
vs. Temperature
1.285
1.280
1.275
1.270
1.265
1.260
1.255
1.25-040 -20
0
VIN = 12V
20 40 60 80 100 120
TEMPERATURE (°C)
4
MIC2601/2
91
90
89
88
87
86
8546
Max Duty Cycle
vs. Input Voltage
EN = VIN
81 01 21 41 61 82 0
INPUT VOLTAGE (V)
Switch Saturation Voltage
vs. Switch Current
2700
–4V –5V –6V –7V –8V –9V
2430 –10V –12V –15V –20V
2160
1890
1620
1350
1080
810
540
270
0
SWITCH CURRENT (A)
VSAT
vs. Temperature
2.0
1.5 ISW = Current Limit
1.0 ISW = 850mA
0.5
ISW = 1200mA
ISW = 500mA
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Enable Current
vs. Temperature
25
24
23
22
21
20
19
18
17
16
EN = 0V
VIN = 12V
1-540 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
M9999-090909-A



MIC2602 datasheet pdf
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MIC2602 pdf
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