SEMTECH SC600

SC600
mAhXLife LED Driver with
5.0V, 4.5V, or 4.0V Output
TM
POWER MANAGEMENT
Description
Features
The SC600 is a versatile charge pump designed for use
in battery operated power supply applications. The wide
input range is matched for Li-Ion battery applications.
mAhxLifeTM LED Drivers feature a fractional charge pump
implementation with efficiency comparable to a switching
regulator without costly inductors. Only two tiny ceramic
capacitors are required, and the inductorless implementation provides a reduced-EMI solution. Patented low
noise mode switching circuitry and constant output current allow the use of extremely small input and output
capacitors.
‹ Small size - MLPD 10 lead 3x3mm or MSOP-10
package allows for a complete solution in .05 sq. in.
‹ Peak efficiency over 90% (extends battery life)
‹ Four component versions available
‹ 60mA versions available in 5.0V and 4.5V output
‹ 120mA versions available in 4.5V and 4.0V output
‹ Short-circuit and over-temperature protection
‹ Soft-start function
‹ Shutdown current <1μA
‹ Selectable fixed frequencies of 8kHz, 32kHz,
262kHz and 650kHz
‹ Low input and output ripple
‹ Regulated to ± 5%
‹ Ease of use
The SC600 charge pump can be used for applications
that require up to 120mA of output current with a 4.0V
or 4.5V output. The 5.0V output version provides up to
60mA of output current.
Applications
‹ Cellular phones
‹ LED backlighting
‹ PDA power supplies
‹ Portable electronics
‹ Electronic books
mAhXLifeTM LED drivers replace switched mode power
supplies and provide comparable efficiency with less cost,
area, noise, and complexity.
Typical Efficiency
100
‹ Handheld computers
‹ Wireless web appliances
90% of Li-Ion
Battery Life
Efficiency [%]
90
SC600A
5.0V@60mA
80
70
Device with Only 2x Mode
5.0V@60mA
60
50
4.2
4.0
3.8
3.6
3.4
3.2
3.0
Input Voltage [V]
Typical Application Circuit
U1
Cin
1.0uF
6
4
VOUT
VIN
EN
SC600
3
2.7V to 6.5V
CF1+
CF1-
CD4
CF2+
5
CX8
CF2-
1
4.0V, 4.5V or 5.0V
2
Cbucket1
1.0uF
9
Cout
0.33uF
UP TO 6 LEDS
10
Cbucket2
1.0uF
7
GND
8
January 9, 2006
1
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SC600
POWER MANAGEMENT
Absolute Maximum Ratings (1)
Exceeding the specifications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the
Electrical Characteristics section is not implied.
Parameter
Symbol
Maximum
Units
Supply Voltage
VIN
-0.3 to +7.0
V
Output Voltage
VOUT
-0.3 to +7.0
V
VOUT Short Circuit Duration
sc
Indefinite
s
Thermal Resistance, Junction to Ambient(2)
θJA
49 (MLPD), 216 (MSOP)
°C/W
Operating Ambient Temperature Range
TA
-40 to +85
°C
Junction Temperature Range
TJ
-40 to +150
°C
Storage Temperature Range
TSTG
-65 to +150
°C
Lead Temperature SC600_IMSTRT
TLEAD
260
°C
Lead Temperature SC600_IMSTR
TLEAD
240
°C
IR Reflow Temperature SC600_IMLTRT
TLEAD
260
°C
IR Reflow Temperature SC600_IMLTR
TLEAD
240
°C
Notes:
1) This device is ESD sensitive. Use of standard ESD handling precautions is required.
2) Calculated from package in still air, mounted to 3”x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Electrical Characteristics
Unless otherwise specified: TA = -40°C to +85°C, CIN = CBUCKET = 1.0µF (ESR = 0.1Ω), COUT 1.0µF (ESR = 0.1Ω), VIN = 2.85V to 5.5V(1).
Parameter
Input Supply Voltage
Quiescent Current
Symbol
Conditions
Typ
2.5
VIN
IQ
Min
© 2006 Semtech Corp.
VOUT
Units
6.5
V
Freq. = 8kHz, IOUT = 0mA, VIN = 3.7V
230
380
Freq. = 32kHz, IOUT = 0mA, VIN = 3.7V
280
470
Freq. = 262kHz, IOUT = 0mA, VIN = 3.7V
800
1200
Freq. = 650kHz, IOUT = 0mA, VIN = 3.7V
1.6
2.5
mA
1
μA
Enable = 0
Output Voltage
Max
Version A, Static Load Regulation
Freq. = 262kHz or 650kHz(2), IOUT = 0 to 60mA
4.75
5.0
5.25
Version B, Static Load Regulation
Freq. = 262kHz or 650kHz(2), IOUT = 0 to 120mA
4.275
4.5
4.725
Version C, Static Load Regulation
Freq. = 262kHz or 650kHz(2), IOUT = 0 to 60mA
4.275
4.5
4.725
Version D, Static Load Regulation
Freq. = 262kHz or 650kHz(2), IOUT = 0 to 120mA
3.8
4.0
4.2
2
μA
V
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SC600
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Output Current
Pump Frequency
Frequency Mode
Transition Time
Symbol
IOUT
fPUMP
Conditions
Min
Typ
Max
Freq. = 262kHz or 650kHz(2); Versions A & C
60
Freq. = 262kHz or 650kHz(2); Versions B & D
120
Freq. = 8kHz; Versions A & C
5
Freq. = 8kHz; Versions B & D
10
Freq. = 32kHz; Versions A & C
20
Freq. = 32kHz; Versions B & D
40
Enable = 1, CD4 = 0, CX8 = 0
-15%
32.768
+15%
Enable = 1, CD4 = 1, CX8 = 0
-15%
8.192
+15%
Enable = 1, CD4 = 0, CX8 = 1
-13%
262.14
+15%
Enable = 1, CD4 = 1, CX8 = 1
-20%
650
+20%
Units
mA
kHz
TFMT
Transition time from one frequency
mode to any other frequency mode(3)
1
Short Circuit Current
ISC
VOUT = 0V, IOUT = IIN
180
Input High Threshold
VIH
All Input Pins (Enable, CD4, CX8)
Input Low Threshold
VIL
All Input Pins (Enable, CD4, CX8)
0.4
V
Input High Current
IIH
All Input Pins (Enable, CD4, CX8)
10
μA
Input Low Current
IIL
All Input Pins (Enable, CD4, CX8)
10
μA
VIN
Mode Transition
Voltage
VIN
Power Efficiency
from Battery to
Regulated Charge
Pump Output@262kHz
Output Ripple
Voltage
η
VPP
Period
600
1.3
mA
V
1.5x to 2x mode, Versions A & B
3.43
3.50
3.56
V
2x to 1.5x mode, Versions A & B
3.48
3.58
3.64
V
Hysteresis
30
80
180
mV
1.5x to 2x mode, Versions C & D
3.23
3.30
3.36
V
2x to 1.5x mode, Versions C & D
3.33
3.40
3.46
V
Hysteresis
40
100
180
mV
VIN = 3.60V, VOUT = 5.0V, IOUT = 60mA
92
%
VIN = 3.60V, VOUT = 4.5V, IOUT = 120mA
83
%
Freq = 262kHz, IOUT = 60mA(2), (3)
25
45
mV
Notes:
1) Version C has an extended input voltage range of operation at VIN = 2.60V to 5.5V.
2) 650kHz allows the use of a smaller bucket capacitor.
3) Guaranteed by design.
4) Peak-to-peak output ripple voltage with COUT = CBUCKET =1μF and X5R dielectric.
© 2006 Semtech Corp.
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SC600
POWER MANAGEMENT
Pin Configuration
Ordering Information
TOP VIEW
VOUT
1
10 CF2+
CF1+
2
9 CF1-
VIN
3
8 GND
CD4
4
7 CF2-
CX8
5
6 EN
MLPD
MSOP
Device(1)
Output
SC600AIMSTR
60mA, 5.0V
SC600BIMSTR
120mA, 4.5V
SC600CIMSTR
60mA, 4.5V
SC600DIMSTR
120mA, 4.0V
SC600AIMSTRT
60mA, 5.0V
SC600BIMSTRT
120mA, 4.5V
SC600CIMSTRT
60mA, 4.5V
SC600DIMSTRT
120mA, 4.0V
SC600AIMLTR
60mA, 5.0V
SC600BIMLTR
120mA, 4.5V
SC600CIMLTR
60mA, 4.5V
SC600DIMLTR
120mA, 4.0V
SC600AIMLTRT
60mA, 5.0V
SC600BIMLTRT
120mA, 4.5V
SC600CIMLTRT
60mA, 4.5V
SC600DIMLTRT
120mA, 4.0V
S C 600E V B
P ackag e
MSOP-10
MSOP-10
Lead-Free (2)
MLPD-10
MLPD-10
Lead-Free(2)
Evaluation Board [include the
component part number when
ordering]
Notes:
1) Available in Tape and Reel only. A reel contains 2500
devices for MSOP and 3000 devices for the MLPD package.
2) This product is fully WEEE and RoHS compliant.
Component Selection
Output Voltage
Maximum Output
Current from
0 to 60mA
5.0V
X
4.5V
4.5V
4.0V
© 2006 Semtech Corp.
Maximum Output
Current from
60 to 120mA
Extended Range of
1.5 x Mode for Pow er
Savings
Device
S C 600A
X
S C 600B
X
X
4
X
S C 600C
X
S C 600D
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SC600
POWER MANAGEMENT
Pin Descriptions
Pin#
Pin Name
Pin Function
1
VOUT
Output voltage regulated to 5.0V, 4.5V, or 4.0V.
2
CF1+
Positive terminal of bucket capacitor 1.
3
VIN
Input voltage ranging from 2.5V to 6.5V.
4
CD4
5
CX8
Bits select the charge pump operating frequency from 8kHz, 32kHz, 262kHz, and 650kHz.
Frequency selection is defined in Table 1 on page 9.
6
EN
Active high enable. Bias current is less than 1μA when set low.
7
CF2-
Negative terminal of bucket capacitor 2.
8
GND
Ground.
9
CF1-
Negative terminal of buck capacitor 1.
10
CF2+
Positive terminal of bucket capacitor 2.
Block Diagram
VIN
3
EN
6
CX8
5
SWITCH
BLOCK
EN
OSC
CD4
GND
4
CLK/16
X0
CLK/8
X1
262kHz
X2
650kHz
X3
X
A
B
650kHz, 262kHz, 32kHz, or 8kHz
CX8
CD4
VIN
8
© 2006 Semtech Corp.
COMPARATORS
VIN
VOUT
VREF
5
1
VOUT
2
CF1+
9
CF1-
10
CF2+
7
CF2-
DRIVERS
MODE
SELECT
TIMER
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SC600
POWER MANAGEMENT
Marking Information - MLP-10
Marking Information - MSOP-10
Top Marking
600X
yyww
600X
yyww
600X = SC600A,B,C or D
yyww = Datecode (Example: 0552)
600X = SC600A,B,C or D
yyww = Datecode (Example: 0552)
Bottom Marking
xxxx
xxxx
xxxx = Semtech Lot Number
© 2006 Semtech Corp.
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SC600
POWER MANAGEMENT
Applications Information
Regulated Fractional Charge Pump Operation
Component Versions
A fractional charge pump is a voltage converter which
implements switched capacitor techniques to produce an
output voltage that is one of several multiples of the input
voltage. Regulated fractional charge pumps (also called
charge pump regulators) use a linear regulator with various charge pump configurations to deliver a regulated output over a wide input voltage range. Regulated fractional
charge pumps have improved efficiency over ordinary linear regulator and charge pump circuit combinations. The
improved efficiency is achieved by implementing multiple
charge pump configurations on one integrated circuit.
The correct charge pump configuration is automatically
selected to meet the regulation requirements at the best
possible efficiency. The SC600 has three charge pump
configurations (modes), which multiply the input voltage
by 1x, 1.5x and 2x.
There are four versions of the SC600. The component
selection table on page 4 highlights the differences between the component types. The three basic differences
between the component versions are in the output voltage, maximum output current capability, and the mode
transition point.
The charge pump configurations are implemented with
two switched or 'bucket' capacitors plus the input and output capacitor. The bucket capacitors are configured for 1x
mode at start-up to source current to the output capacitor
and bring the output up quickly. The charge pump will
begin switching in 1.5x mode. During normal operation,
starting with a fully charged Li-Ion cell, the battery voltage
will begin at about 4.1V. As the battery discharges and
the voltage decays, the SC600 will eventually transition to
2x mode when the battery voltage is approximately 3.50V.
Hysteresis is provided to prevent mode toggling. The output is prevented from exceeding 6.0V. This feature allows
the use of 6.3V ceramic capacitors.
The SC600B has higher output capability, up to 120mA,
and S600C is rated for 60mA. The SC600D (4.0V) is for
applications using up to 120mA.
The mode transition point is the value of input voltage at
which the component will transition between 1.5x and 2x
modes. 5.0V, 4.5V, and 4.0V versions are available. The
SC600A (5.0V) is most efficient for applications that use
up to 60mA. The SC600B (4.5V) and SC600C (4.5V) have
different maximum output currents and mode transition
points. The lower mode transition point of the SC600C
allows it to remain in 1.5x mode longer for greater power
savings.
Start-Up Conditions
Typical start-up time is less than 50μs. Caution: The SC600
must be enabled while 650kHz or 262kHz is selected to prevent over-voltage during start-up.
LED Bias and Backlighting Applications
When using the SC600 for LED bias, note that the SC600C
and SC600D require the same input power per unit of
output current even though the SC600C is more efficient.
Also, the SC600A will have the same input power as the
SC600B though the SC600A is more efficient.
mAhXLiFETM Advantage
The plot on page 1 shows the efficiency of the SC600A.
An example of a 5.0V regulated charge pump doubler is
plotted to demonstrate how effective the SC600’s 1.5x
mode is at improving efficiency when the input voltage is
above 3.5V. Most of the Li-Ion battery life is above 3.5V
where the SC600 achieves more than 20% higher efficiency compared to the 5.0V regulated charge pump doubler with only a 2x mode. Following the efficiency curve
from left to right as the battery discharges, the SC600A
5.0V remains in 1.5x mode until 3.5V and then transitions
to 2x mode.
© 2006 Semtech Corp.
The following plots of Input Power vs. Input Voltage highlight the differences in application of the four component
versions. To achieve the lowest possible input power, it
is desirable for the charge pump to remain in 1.5x mode
until the input voltage is as low as possible. The transition points from 1.5x to 2x are identified in the plot where
the input power steps upward as the input voltage moves
lower.
7
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SC600
POWER MANAGEMENT
Applications Information (Cont.)
Input Power of SC600 A&C Output Current = 60mA
Input Power of SC600 B&D Output Current = 120mA
1000.00
550.00
SC600B 4.5V
SC600A 5.0V & SC600B 4.5V
SC600C 4.5V & SC600D 4.0V
500.00
SC600D 4.0V
950.00
900.00
350.00
800.00
750.00
700.00
Input Power[mW]
400.00
Input Power[mW]
850.00
450.00
650.00
600.00
300.00
550.00
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.10
250.00
3.00
4.20
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.10
500.00
3.00
Input
InputVoltage[V]
Voltage[V]
Input Voltage[V]
© 2006 Semtech Corp.
4.10
8
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SC600
POWER MANAGEMENT
Applications Information (Cont.)
Brightness Control with PWM Input
current, and then changes to 32kHz when there is no load
current. This is done to save battery power by taking advantage of the lower 280μA quiescent current at 32kHz.
The ripple voltage seen at the output is reasonable for
LED applications, but the output capacitance can be increased to reduce the ripple if required. The sum of the
LED currents for this circuit is 55mA during the on-time.
Brightness control using a PWM input can be achieved
with the application circuit below. Note that by connecting
CX8 to the PWM signal the switching frequency is changed
as the PWM signal changes. The charge pump operates
at 262kHz during the on-time when there is a demand for
White LED Driver Circuit with PWM Brightness Control
U1
2 .7V to 6. 5V
C in
1 uF
6
4
VI N
EN
9
Cout
1uF
C buck et1
1 uF
10 0
10 0
C D4
C F2 +
5
2
C F1 +
C F1 -
5.0 V
1
VOUT
SC600A
3
C X8
C F2 -
10 0
10
7
C buck et2
1 uF
GN D
8
PW M
Voltage Waveforms for LED Driver Circuit
Battery Current vs. Input Voltage
for Various Duty Cycles
Ripple Voltage vs. Input Voltage
500
Vout p-p
89.20%
120
70.30%
Vin p-p
450
400
50.20%
100
80
300
Battery Current [mA]
Ripple Voltage [mV]
30.20%
350
250
200
150
60
40
100
20
50
0
2.8
0
2.8
3.3
3.8
4.3
4.8
5.3
5.8
Input Voltage [V]
© 2006 Semtech Corp.
3
3.2
3.4
3.6
3.8
4
Input Voltage [V]
9
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SC600
POWER MANAGEMENT
Applications Information (Cont.)
Comparison with Other Regulation Methods
Ripple Performance
In many instances, a charge pump regulator is the best
choice for portable power applications. These regulators
offer many advantages over switch mode regulators. A
smaller bill of materials, less layout area, lower component height, less noise, no EMF, and less overall circuit
cost are typical reasons to use this type of regulation. In
some cases the efficiency of a charge pump regulator exceeds the efficiency of a switch mode regulator.
Examples of the output ripple, charge pump frequency
and capacitor size are listed in Table 2.
Switch mode regulators have harmonics which vary due to
the pulse width modulation used to regulate the output.
Varying harmonics can make it difficult to ensure acceptable noise performance over the entire operating range.
Many switch mode regulators have increased voltage ripple on the output during pulse skipping mode due to large
periods of time when no current is supplied to the output.
The SC600 supplies current to the output continuously,
so the voltage ripple is less than a switch mode regulator, even with greatly reduced output capacitance. The
SC600 delivers a continuous current to the output during
1x, 1.5x and 2x modes. Most of the battery life requires
1.5x mode.
Inductors are often the largest and most expensive discrete component in a design. Because there are no inductors used in the SC600, cost, noise, layout area, as
well as the the EMF associated with the inductor, are
eliminated.
The SC600’s fixed frequency harmonics are an advantage
in portable communications equipment, such as cellular
telephones. The SC600 has distinct frequencies of operation, so the harmonics are predictable. The harmonics
are not fixed in a switch mode regulator.
Frequency Selection
CX8 and CD4 are frequency select inputs; input from a µP
or other device may be used to change the charge pump
frequency at any time (as shown in Table 1). The optimal frequency will depend upon the capacitor values, the
load current, and the acceptable amount of output ripple.
Lower frequencies will be more efficient, while higher frequencies will support higher output currents with lower
ripple.
Table 1 -Frequency Selection Logic
Sw itching Frequency
C X8
CD4
32kHz
0
0
8kHz
0
1
262kHz
1
0
650kHz
1
1
Table 2 -Ripple Performance
Part No.
Freq. [kHz ]
IOUT [mA]
Output Ripple [mVp-p]
1.5x mode
Ouput Ripple [mVp-p]
2x mode
COUT [μF]
CBUCKET [μF]
SC600A 5.0V
8
5
65
15
1
1
32
20
150
25
1
1
262
60
25
20
1
1
650
60
10
15
1
1
650
60
20
25
0.33
1
© 2006 Semtech Corp.
10
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SC600
POWER MANAGEMENT
Applications Information (Cont.)
Table 2 -Ripple Performance (Cont.)
Part No.
Freq. [kHz ]
IOUT [mA]
SC600B(1) 4.5V
8
10
215
32
40
262
SC600D 4.0V
Output Ripple [mVp-p] Ouput Ripple [mVp-p]
1.5x mode
2x mode
COUT [μF]
CBUCKET [μF]
50
1
1
300
90
1
1
120
40
25
1
1
650
120
15
25
1
1
650
120
30
45
0.33
1
8
10
105
50
1
1
32
40
240
45
1
1
262
120
30
20
1
1
650
120
11
20
1
1
650
120
25
40
0.33
1
Note: (1) SC600C is very similar to SC600B.
Mode Transition Impedance
The mode transition impedance Ro refers to the output
resistance of the charge pump before a transition to a
stronger mode occurs. Ro is dependent upon the fractional charge pump, switching frequency, bucket capacitor value, bucket capacitor ESR, and the internal switch
resistances.
Ro is proportional to,
A lower value of Ro will improve efficiency, so low ESR
ceramic capacitors are required. An X7R or X5R dielectric is recommended. Y5V dielectric can require 2 to 3
times the rated value of an X7R dielectric for the same
performance over the operating temperature range.
Efficiency
1
Efficiency for the SC600 is defined as,
f˜C
V O˜ I O
η = V IN˜ mode ˜ I O I Q
Ro can be measured to verify a low transition impedance. Before measuring Ro, select the capacitors, set
the operating frequency and a constant load current. Find
the input voltage just before a weak to strong mode transition (i.e., 1.5x to 2x mode). Measure VIN, VOUT, and IOUT
before the transition.
Ro will be,
Ro=
© 2006 Semtech Corp.
mode˜ V IN V OUT
I OUT
11
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SC600
POWER MANAGEMENT
Applications Information (Cont.)
where:
Short-Circuit and Over-Temperature Protection
VO = output voltage
IO = output currrent
mode = 1.5x or 2x
VIN = input voltage
IQ = quiescent current
The output current is limited to 600mA to protect against
short-circuit conditions. Over-temperature protection is
also provided.
Design and Layout Considerations
(from Electrical Characteristics on page 2)
The layout example on page 15 uses the 1206 case size
for the capacitors, so a smaller layout area is possible.
The bucket capacitors and the SC600 are on the same
side of the card. To minimize trace inductance, traces are
short and wide with no vias to the bucket capacitors. The
input and output caps are on the bottom side directly under the SC600 and vias are used to connect directly to
copper shapes used for the input and output. The input
and output capacitors and Pin 8 should be connected to
ground very near the SC600.
The mode may be identified by measuring input current
and output current and calculating as mode = IIN/IOUT.
Alternately, the mode can be identified by identifying
the voltage at the bucket capacitor, CF1 with an
oscilloscope.
Calculating Power Dissipation
The power dissipated by the SC600 is calculated as,
PD = PIN - POUT
PD = VIN · (mode IO + IQ) - VO · IO
Suggested Capacitors
The following is a short list of some of the manufacturers
and types of multi-layer ceramic capacitors that are suggested for the SC600.
Manufacturer
Part Number
Capacitance[μF]
Dielectric Type
EIA Package Siz e
Voltage
Rating
AVX
0805ZC225K
2.2
X 7R
0805
10V
AVX
0805ZC105K
1.0
X 7R
0805
10V
AVX
0805ZC334K
0.33
X 7R
0805
10V
Panasonic
ECJ2YB0J225K
2.2
X 5R
0805
6.3V
Panasonic
ECJ2YB1A105
1.0
X 7R
0805
10V
Panasonic
E C J1 V B 0 J1 0 5 K
1.0
X 5R
0402
6.3V
Panasonic
E C J1 V B 0 J3 3 4 K
0.33
X 5R
0603
6.3V
TDK
C1608X5R1A105
1.0
X 5R
0603
10V
TDK
C1202Y5V1A106Z
1.0
X 5R
0805
10V
TDK
C1608X5R1A334k
0.33
X 5R
0603
10V
© 2006 Semtech Corp.
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SC600
POWER MANAGEMENT
Typical Characteristics
Load Regulation, VIN = 3.6V, Freq. = 650kHz
Line Regulation, Freq. = 650kHz
5.2
5
SC600A at 60mA
SC600B at 120mA
SC600D at 120mA
4.8
SC600A at 60mA
SC600B at 120mA
SC600D at 120mA
4.8
Output Voltage [V]
Output Voltage [V]
5
4.6
4.4
4.2
4.6
4.4
4.2
4
4
3.8
3.8
2.5
0
20
40
60
80
100
3
3.5
4
4.5
5
5.5
6
6.5
120
Input Voltage [V]
Load Current [mA]
Efficiency vs. Output Current, VIN = 3.6V,
Freq. = 650kHz
Start-Up Conditions for 5.0V Output
95
90
85
Efficiency [%]
80
75
70
65
SC600A 5.0V
SC600B 4.5V
SC600C 4.5V
SC600D 4.0V
60
55
50
0
10
20
30
40
50
60
70
80
90
100
110
120
Current [mA]
Ripple Voltage
© 2006 Semtech Corp.
Start-Up Conditions for 4.0V Output
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SC600
POWER MANAGEMENT
Typical Characteristics (Cont.)
Efficiency vs. Input Voltage for B and C Version
Efficiency vs. Input Voltage for A and D Version
95
95
SC600A 5.0V@60mA
SC600D 4.0V@120mA
SC600B 4.5V@120mA
90
SC600C 4.5V@60mA
85
Efficiency [%]
Efficiency [%]
90
80
75
70
65
85
80
75
70
65
60
60
4.2
4.0
3.8
3.6
3.4
3.2
3.0
4.2
Input Voltage [V]
4.0
3.8
3.6
3.4
3.2
3.0
Input Voltage [V]
Evaluation Board Schematic
Evaluation Board Bill of Materials
Reference
U1
C1, C2, C3, C4
C5
R7, R8, R9
D1, D2, D3
D4, D5, D6
© 2006 Semtech Corp.
Value
SC600
1.0µF
10µF
-
Comment
MSOP-10 or MLPD-10 lead 3x3mm
Ceramic, low ESR type
This extra capacitor supports usage of long power leads from a benchtop supply
Add limiting resistors to meet the requirements of the application
Add white or blue LEDs to meet the requirements of the applicaton on SMT pads
Add white or blue LEDs to meet the requirements of the application on PTH pads
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SC600
POWER MANAGEMENT
Evaluation Board Gerber Plots
Top View
© 2006 Semtech Corp.
Bottom View
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SC600
POWER MANAGEMENT
Outline Drawing - MSOP-10
DIMENSIONS
INCHES
MILLIMETERS
DIM
MIN NOM MAX MIN NOM MAX
e
A
D
A
A1
A2
b
c
D
E1
E
e
L
L1
N
01
aaa
bbb
ccc
N
2X E/2
ccc C
2X N/2 TIPS
E
E1
PIN 1
INDICATOR
12
B
.043
.006
.000
.037
.030
.007
.011
.009
.003
.114 .118 .122
.114 .118 .122
.193 BSC
.020 BSC
.016 .024 .032
(.037)
10
0°
8°
.004
.003
.010
1.10
0.00
0.15
0.75
0.95
0.17
0.27
0.08
0.23
2.90 3.00 3.10
2.90 3.00 3.10
4.90 BSC
0.50 BSC
0.40 0.60 0.80
(.95)
10
0°
8°
0.10
0.08
0.25
D
aaa C
SEATING
PLANE
A2
bxN
bbb
c
GAGE
PLANE
A1
C
H
A
C A-B D
0.25
L
(L1)
DETAIL
SIDE VIEW
SEE DETAIL
01
A
A
NOTES:
1.
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
4. REFERENCE JEDEC STD MO-187, VARIATION BA.
© 2006 Semtech Corp.
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SC600
POWER MANAGEMENT
Land Pattern - MSOP-10
X
DIM
(C)
G
C
G
P
X
Y
Z
Z
Y
DIMENSIONS
INCHES
MILLIMETERS
(.161)
.098
.020
.011
.063
.224
(4.10)
2.50
0.50
0.30
1.60
5.70
P
NOTES:
1.
© 2006 Semtech Corp.
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
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SC600
POWER MANAGEMENT
Outline Drawing - MLPD-10
A
E
DIMENSIONS
INCHES
MILLIMETERS
DIM
MIN NOM MAX MIN NOM MAX
B
A
A1
A2
b
C
D
E
e
L
N
aaa
bbb
E
PIN 1
INDICATOR
(LASER MARK)
A
aaa C
A1
C
1
.031
.039
.000
.002
(.008)
.007 .009 .011
.074 .079 .083
.042 .048 .052
.114 .118 .122
.020 BSC
.012 .016 .020
10
.003
.004
1.00
0.80
0.05
0.00
(0.20)
0.18 0.23 0.30
1.87 2.02 2.12
1.06 1.21 1.31
2.90 3.00 3.10
0.50 BSC
0.30 0.40 0.50
10
0.08
0.10
SEATING
PLANE
C
A2
2
LxN
D
N
e
bxN
bbb
C A B
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS TERMINALS.
© 2006 Semtech Corp.
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SC600
POWER MANAGEMENT
Land Pattern - MLPD-10
K
DIM
(C)
H
G
C
G
H
K
P
X
Y
Z
Z
Y
X
DIMENSIONS
INCHES
MILLIMETERS
(.112)
.075
.055
.087
.020
.012
.037
.150
(2.85)
1.90
1.40
2.20
0.50
0.30
0.95
3.80
P
NOTES:
1.
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
Contact Information
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805) 498-2111 FAX (805) 498-3804
www.semtech.com
© 2006 Semtech Corp.
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