MIC33153 Datasheet PDF - MICREL

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MIC33153
MICREL

Part Number MIC33153
Description 4MHz PWM 1.2A Internal Inductor Buck Regulator
Page 17 Pages


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MIC33153
4MHz PWM 1.2A Internal Inductor
Buck Regulator with HyperLight Load™
and Power Good
General Description
Features
The MIC33153 is a high-efficiency 4MHz 1.2A
synchronous buck regulator with an internal inductor,
HyperLight Load™ mode, Power Good (PG) output
indicator, and programmable soft start. HyperLight Load™
provides very high efficiency at light loads and ultra-fast
transient response which makes the MIC33153 perfectly
suited for supplying processor core voltages. An additional
benefit of this proprietary architecture is very low output
ripple voltage throughout the entire load range with the use
of small output capacitors.
The MIC33153 is designed so that only two external
capacitors as small as 2.2µF are needed for stability. This
gives the MIC33153 the ease of use of an LDO with the
efficiency of a HyperLight Load™ DC converter. The
MIC33153 achieves efficiency in HyperLight LoadTM mode
as high as 85% at 1mA, with a very low quiescent current
of 22µA. At higher loads, the MIC33153 provides a
constant switching frequency up to 4MHz.
The MIC33153 is available in 14-pin 3.0mm x 3.5mm
MLF® package with an operating junction temperature
range from –40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Internal inductor
Simplifies design to two external capacitors
Input voltage: 2.7V to 5.5V
Output voltage: fixed or adjustable (0.62V to 3.6V)
Up to 1.2 A output current
Up to 93% peak efficiency
85% typical efficiency at 1mA
Power Good (PG) output
Programmable soft start
22µA typical quiescent current
4MHz PWM operation in continuous mode
Ultra-fast transient response
Low ripple output voltage
35mVpp ripple in HyperLight Loadmode
7mV output voltage ripple in full PWM mode
0.01µA shutdown current
Thermal shutdown and current limit protection
14-pin 3.0 x 3.5 x 1.1mm MLF® package
–40°C to +125°C junction temperature range
Applications
Solid State Drives (SSD)
Mobile handsets
Portable media/MP3 players
Portable navigation devices (GPS)
WiFi/WiMax/WiBro modules
Wireless LAN cards
Portable applications
____________________________________________________________________________________________________________
Typical Application
www.DataSheet4U.com
Fixed Output Voltage
Adjustable Output Voltage
HyperLight Load is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademark Amkor Technology Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-01200 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2010
M9999-092910-A



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Micrel Inc.
MIC33153
Ordering Information
Part Number1
Marking Code
Nominal Output
Voltage
Junction Temperature
Range
Package2
MIC33153-4YHJ
MIC33153YHJ
4
33153
MIC
33153
1.2V
Adjustable
–40°C to +125°C
–40°C to +125°C
14-pin 3.0 x 3.5 x 1.1mm MLF®
14-pin 3.0 x 3.5 x 1.1mm MLF®
Notes:
1. Other options available (1V - 3.3V). Contact Micrel Marketing for details.
2. MLF® is GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Pin Configuration
14- Pin 3.0mm x 3.5mm MLF® (HJ)
Fixed Output Voltage
(Top View)
14- Pin 3.0mm x 3.5mm MLF® (HJ)
Adjustable Output Voltage
(Top View)
Pin Description
Pin
Number
(Fixed)
1
Pin
Number
(Adjustable)
1
22
33
44
5,6,7
5,6,7
8,9,10
8,9,10
11 11
www.D1a2taSheet4U.co1m2
13 13
14
14
Pin
Name
SS
AGND
VIN
PGND
OUT
SW
EN
SNS
PG
NC
FB
Pin Function
Soft Start: Place a capacitor from this pin to ground to program the soft start time.
Do not leave floating, 100pF minimum CSS is required.
Analog Ground: Connect to central ground point where all high current paths meet
(CIN, COUT, PGND) for best operation.
Input Voltage: Connect a capacitor to ground to decouple the noise.
Power Ground.
Output Voltage: The output of the regulator. Connect to SNS pin. For adjustable option,
connect to feedback resistor network.
Switch: Internal power MOSFET output switches before Inductor
Enable: Logic high enables operation of the regulator. Logic low will shut down the device.
Do not leave floating.
Sense: Connect to VOUT as close to output capacitor as possible to sense output voltage.
Power Good: Open drain output for the Power Good (PG) indicator. Use a pull up resistor
from this pin to a voltage source to detect a power good condition.
Not Internally Connected.
Feedback: Connect a resistor divider from the output to ground to set the output voltage.
September 2010
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Micrel Inc.
MIC33153
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .......................................... 0.3V to 6V
Sense Voltage (VSNS) ........................................0.3V to VIN
Output Switch Voltage (VSW) .............................0.3V to VIN
Enable Input Voltage (VEN)................................0.3V to VIN
Power Good (PG) Voltage (VPG) .......................0.3V to VIN
Storage Temperature Range ..……………65°C to +150°C
Lead Temperature (soldering, 10 sec.)...................... 260°C
ESD Rating(3)................................................. ESD Sensitive
Operating Ratings(2)
Supply Voltage (VIN)... …………………………..2.7V to 5.5V
Enable Input Voltage (VEN) .. ……………………….0V to VIN
Sense Voltage (VSNS) ..................................... 0.62V to 3.6V
Junction Temperature Range (TJ).. ….40°C TJ +125°C
Thermal Resistance
3.0mm x 3.5mm MLF®-14 (θJA)..........................55°C/W
Electrical Characteristics(4)
TA = 25°C; VIN = VEN = 3.6V; COUT = 4.7µF unless otherwise specified. Bold values indicate –40°C TJ +125°C, unless noted.
Parameter
Supply Voltage Range
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
Quiescent Current
Shutdown Current
Output Voltage Accuracy
Feedback Regulation Voltage
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
PWM Switch ON-Resistance
Maximum Switching Frequency
Soft Start Time
Soft Start Current
PG Threshold (Rising)
PG Threshold Hysteresis
PG Delay Time
Enable Threshold
Enable Input Current
Over-Temperature Shutdown
Over-Temperature Shutdown
Hysteresis
Condition
(Turn-On)
IOUT = 0mA , SNS > 1.2 * VOUT Nominal
VEN = 0V; VIN = 5.5V
VIN = 3.6V if VOUTNOM < 2.5V, ILOAD = 20mA
VIN = 4.5V if VOUTNOM 2.5V, ILOAD = 20mA
ILOAD = 20mA
SNS = 0.9*VOUTNOM
VIN = 3.6V to 5.5V if VOUTNOM < 2.5V, ILOAD = 20mA
VIN = 4.5V to 5.5V if VOUTNOM 2.5V, ILOAD = 20mA
1mA < ILOAD < 1A, VIN = 3.6V if VOUTNOM < 2.5V
1mA < ILOAD < 1A, VIN = 5.0V if VOUTNOM 2.5V
ISW = 100mA PMOS
ISW = 100mA NMOS
IOUT = 300mA
VOUT = 90%, CSS = 470pF
VSS = 0V
Rising
Turn-On
Min.
2.7
2.45
2.5
0.6045
2.2
86
0.5
Typ.
2.55
75
22
0.01
0.62
3.3
0.3
0.8
0.85
0.2
0.19
4
320
2.7
92
7
68
0.9
0.1
160
20
Max.
5.5
2.65
45
5
+2.5
0.6355
96
1.2
2
Units
V
V
mV
µA
µA
%
V
A
%/V
%/A
Ω
MHz
µs
µA
%
%
µs
V
µA
°C
°C
wwNowte.Ds:ataSheet4U.com
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kin series with 100pF.
4. Specification for packaged product only.
September 2010
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Micrel Inc.
Typical Characteristics
Efficiency (VOUT = 3.3V)
100
90
80
70
60 VIN = 4.2V
50
VIN = 5.0V
VIN = 5.5V
40
30
20
10
0
1
COUT = 4.7µF
10 100 1000 10000
OUTPUT CURRENT (mA)
Efficiency (VOUT = 1.5V)
100
90 VIN = 3.0V
80
70
60
50 VIN = 3.6V VIN = 4.2V
40
30
20
10
0
1
COUT = 4.7µF
10 100 1000 10000
OUTPUT CURRENT (mA)
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
2.7
Current Limit
vs. Input Voltage
3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
5.7
Line Regulation
(Light Load)
1.900
1.880
1.860
1.840
IOUT = 160mA
IOUT = 40mA
1.820
1.800
1.780
www.Da1t.7a6S0 heet4U.com
1.740
1.720
1.700
2.5 3 3.5
IOUT = 1mA
VOUTNOM = 1.8V
COUT = 4.7µF
4 4.5 5
INPUT VOLTAGE (V)
5.5
September 2010
Efficiency (VOUT = 2.5V)
100
90
80
70
60
50
VIN = 3.6V
VIN = 4.2V
VIN = 5.5V
40
30
20
10
0
1
COUT = 4.7µF
10 100 1000 10000
OUTPUT CURRENT (mA)
Efficiency (VOUT = 1.2V)
100
90 VIN = 3.0V
80
70
60
50 VIN = 3.6V VIN = 4.2V
40
30
20
10
0
1
COUT = 4.7µF
10 100 1000 10000
OUTPUT CURRENT (mA)
Quiescent Current
vs. Input Voltage
40
35
T = 125°C
T = 20°C
30
25
20
15
10 No Switching
SNS > 1.2 * VOUTNOM
5 COUT = 4.7µF
0
2.7 3.2 3.7 4.2
T = - 45°C
4.7 5.2
INPUT VOLTAGE (V)
5.7
1.900
1.880
1.860
1.840
Line Regulation
(Heavy Load)
VOUTNOM = 1.8V
COUT = 4.7µF
IOUT = 300mA
1.820
1.800
1.780
1.760
1.740
1.720
IOUT = 500mA
IOUT = 1000mA
1.700
2.5 3 3.5 4 4.5 5
INPUT VOLTAGE (V)
5.5
4
MIC33153
Efficiency (VOUT = 1.8V)
100
90
80
70
60
50 VIN = 3.0V
40
VIN = 3.6V VIN = 4.2V
30
20
10
0
1
COUT = 4.7µF
10 100 1000 10000
OUTPUT CURRENT (mA)
Efficiency (VOUT = 1.0V)
100
90 VIN = 3.0V
80
70
60
50 VIN = 3.6V
VIN = 4.2V
40
30
20
10
0
1
COUT = 4.7µF
10 100 1000 10000
OUTPUT CURRENT (mA)
Shutdown Current
vs. Input Voltage
30
25
20
15
10
5
0
2.5
3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
5.5
Load Regulation
1.300
1.250
VIN = 4.2V
1.200
VIN = 3.6V
1.150
1.100
0
VIN = 3.0V
VOUTNOM = 1.2V
COUT = 4.7µF
200 400 600 800 1000 1200
OUTPUT CURRENT (mA)
M9999-092910-A



MIC33153 datasheet pdf
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MIC33153 4MHz PWM 1.2A Internal Inductor Buck Regulator MIC33153
MICREL
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