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SC600DIMSTRT

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
www.semtech.com1
POWER MANAGEMENT
SC600
mAhXLife
TM
LED Driver with
5.0V, 4.5V, or 4.0V Output
50
60
70
80
90
100
3.03.23.43.63.84.04.2
Input Voltage [V]
Efficiency [%]
90% of Li-Ion
Battery Life
SC600A
5.0V@60mA
Device with Only 2x Mode
5.0V@60mA
January 9, 2006
Description
Features
Typical Application Circuit
Applications
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.
mAhxLife
TM
LED Drivers feature a fractional charge pump
implementation with effi ciency comparable to a switching
regulator without costly inductors. Only two tiny ceramic
capacitors are required, and the inductorless implemen-
tation provides a reduced-EMI solution. Patented low
noise mode switching circuitry and constant output cur-
rent allow the use of extremely small input and output
capacitors.
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.
mAhXLife
TM
LED drivers replace switched mode power
supplies and provide comparable effi ciency with less cost,
area, noise, and complexity.
Typical Effi ciency
Small size - MLPD 10 lead 3x3mm or MSOP-10
package allows for a complete solution in .05 sq. in.
Peak effi ciency 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 fi xed frequencies of 8kHz, 32kHz,
262kHz and 650kHz
Low input and output ripple
Regulated to ± 5%
Ease of use
Cellular phones
LED backlighting
PDA power supplies
Portable electronics
Electronic books
Handheld computers
Wireless web appliances
Cin
1.0uF
2. 7V t o 6. 5V
Cbucket1
1.0uF
Cbucket2
1.0uF
VIN
EN
CD4
CX8
GND
CF2-
CF2+
CF1-
CF1+
VOUT
3
6
4
5
8
7
10
9
2
1
U1
SC600
Cout
0.33uF
UP TO 6 LEDS
4. 0V, 4. 5V or 5. 0V
2
© 2006 Semtech Corp. www.semtech.com
POWER MANAGEMENT
SC600
Absolute Maximum Ratings
Exceeding the specifi cations below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specifi ed in the
Electrical Characteristics section is not implied.
Unless otherwise specifi ed: T
A
= -40°C to +85°C, C
IN
= C
BUCKET
= 1.0µF (ESR = 0.1Ω), C
OUT
1.0µF (ESR = 0.1Ω), V
IN
= 2.85V to 5.5V
(1)
.
Parameter Symbol Maximum Units
Supply Voltage V
IN
-0.3 to +7.0 V
Output Voltage V
OUT
-0.3 to +7.0 V
V
OUT
Short Circuit Duration sc Indefi nite s
Thermal Resistance, Junction to Ambient
(2)
θ
JA
49 (MLPD), 216 (MSOP) °C/W
Operating Ambient Temperature Range T
A
-40 to +85 °C
Junction Temperature Range T
J
-40 to +150 °C
Storage Temperature Range T
STG
-65 to +150 °C
Lead Temperature SC600_IMSTRT T
LEAD
260 °C
Lead Temperature SC600_IMSTR T
LEAD
240 °C
IR Refl ow Temperature SC600_IMLTRT T
LEAD
260 °C
IR Refl ow Temperature SC600_IMLTR T
LEAD
240 °C
Parameter Symbol Conditions Min Typ Max Units
Input Supply Voltage V
IN
2.5 6.5 V
Quiescent Current I
Q
Freq. = 8kHz, I
OUT
= 0mA, V
IN
= 3.7V 230 380
μAFreq. = 32kHz, I
OUT
= 0mA, V
IN
= 3.7V 280 470
Freq. = 262kHz, I
OUT
= 0mA, V
IN
= 3.7V 800 1200
Freq. = 650kHz, I
OUT
= 0mA, V
IN
= 3.7V 1.6 2.5 mA
Enable = 0 1 μA
Output Voltage V
OUT
Version A, Static Load Regulation
Freq. = 262kHz or 650kHz
(2)
, I
OUT
= 0 to 60mA
4.75 5.0 5.25
V
Version B, Static Load Regulation
Freq. = 262kHz or 650kHz
(2)
, I
OUT
= 0 to 120mA
4.275 4.5 4.725
Version C, Static Load Regulation
Freq. = 262kHz or 650kHz
(2)
, I
OUT
= 0 to 60mA
4.275 4.5 4.725
Version D, Static Load Regulation
Freq. = 262kHz or 650kHz
(2)
, I
OUT
= 0 to 120mA
3.8 4.0 4.2
Absolute Maximum Ratings
(1)
Electrical Characteristics
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.
3© 2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC600
Parameter Symbol Conditions Min Typ Max Units
Output Current I
OUT
Freq. = 262kHz or 650kHz
(2)
; Versions A & C 60
mA
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
Pump Frequency f
PUMP
Enable = 1, CD4 = 0, CX8 = 0 -15% 32.768 +15%
kHz
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%
Frequency Mode
Transition Time
T
FMT
Transition time from one frequency
mode to any other frequency mode
(3)
1 Period
Short Circuit Current I
SC
V
OUT
= 0V, I
OUT
= I
IN
180 600 mA
Input High Threshold V
IH
All Input Pins (Enable, CD4, CX8) 1.3 V
Input Low Threshold V
IL
All Input Pins (Enable, CD4, CX8) 0.4 V
Input High Current I
IH
All Input Pins (Enable, CD4, CX8) 10 μA
Input Low Current I
IL
All Input Pins (Enable, CD4, CX8) 10 μA
Mode Transition
Voltage
V
IN
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
V
IN
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
Power Effi ciency
from Battery to
Regulated Charge
Pump Output@262kHz
η
V
IN
= 3.60V, V
OUT
= 5.0V, I
OUT
= 60mA 92 %
V
IN
= 3.60V, V
OUT
= 4.5V, I
OUT
= 120mA 83 %
Output Ripple
Voltage
V
PP
Freq = 262kHz, I
OUT
= 60mA
(2), (3)
25 45 mV
Notes:
1) Version C has an extended input voltage range of operation at V
IN
= 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 C
OUT
= C
BUCKET
=1μF and X5R dielectric.
Electrical Characteristics (Cont.)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

SC600DIMSTRT

Mfr. #:
Buy SC600DIMSTRT
Manufacturer:
Semtech
Description:
LED Lighting Drivers MAHXLIFE REG(FRAC CHRG PUMP)
Lifecycle:
New from this manufacturer.
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