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LTC3203BEDD-1#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC3203/LTC3203-1
LTC3203B/LTC3203B-1
1
32031fa
APPLICATIO S
U
TYPICAL APPLICATIO
U
FEATURES
DESCRIPTIO
U
The LTC
®
3203/LTC3203-1/LTC3203B/LTC3203B-1 are low
noise, high efficiency charge pump DC/DC converters
capable of driving loads up to 500mA from a 2.7V to 5.5V
input. Low external parts count (two flying capacitors and
bypass capacitors at V
IN
and V
OUT
) make the LTC3203
family ideally suited for small, battery-powered applica-
tions.
Built-in soft-start circuitry prevents excessive inrush
current during start-up. High switching frequency enables
the use of small external capacitors. The LTC3203/
LTC3203-1 feature Burst Mode operation at light load to
achieve high efficiency whereas the LTC3203B/
LTC3203B-1 operate at constant frequency to achieve
lowest noise operation.
The LTC3203-1/LTC3203B-1 have a user selectable fixed
output voltage of 4.5V or 5V to power LEDs or logic
circuits. The FB pin of the LTC3203/LTC3203B can be used
to program the desired output voltage. The parts are short-
circuit and overtemperature protected and are available in
a low profile (3mm × 3mm) DFN package.
■
High Current LED Backlight Supply for
Cellphones/PDAs
■
Cellphone Camera Light Supply
■
General Purpose 3.3V or Li-Ion to 5V Supply
■
USB ON THE GO(OTG) Devices
■
Selectable Dual Mode Operation: 1:1.5 or 1:2
■
High Output Current: Up to 500mA
■
Low Noise Constant Frequency (1MHz/0.9MHz)
Operation*
■
V
IN
Range: 2.7V to 5.5V
■
Adjustable Output Voltage (LTC3203/LTC3203B)
■
User Selectable Fixed Output Voltages: 4.5V or 5V
(LTC3203-1 and LTC3203B-1)
■
Burst Mode
®
Operation with
I
Q
~ 120µA (LTC3203/LTC3203-1)
■
Constant Freqency Operation at All Loads
(LTC3203B/LTC3203B-1)
■
Soft-Start Limits Inrush Current at Turn-On
■
Short-Circuit/Thermal Protection
■
Shutdown Disconnects Load from Input
■
Shutdown Current: < 1µA
■
Available in a 10-pin (3mm × 3mm) DFN Package
500mA Output Current
Low Noise Dual Mode
Step-Up Charge Pumps
3203 F02
LTC3203-1
ON/OFF
OUTPUT PROGRAMMING
V
SEL
500mA
SHDN
MODE
GND
V
OUT
V
OUT
V
IN
V
IN
C1
+
C1
–
C2
–
C2
+
2.2µF
2.2µF
2.2µF
10µF
R1*
100k
I
OUT(MAX)
300mA
300mA
500mA
500mA
V
SEL
LOW
HIGH
LOW
HIGH
V
OUT
4.5V
5V
4.5V
5V
*R1
316k
357k
357k
402k
V
IN
(V)
2.5
0
EFFICIENCY (%)
20
40
60
3
3.5
4 4.5
3203 G05
5
80
100
10
30
50
70
90
5.5
V
OUT
= 4.5V
V
OUT
= 5V
Efficiency vs V
IN
at 300mA Load Current
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*Protected by U.S. Patents including 6411531.
LTC3203/LTC3203-1
LTC3203B/LTC3203B-1
2
32031fa
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
V
IN
, V
OUT
to GND ......................................... –0.3V to 6V
MODE, V
SEL
/FB, SHDN ..................... –0.3V to V
IN
+0.3V
V
OUT
Short Circuit Duration ............................. Indefinite
I
OUT
(Note 2)....................................................... 500mA
Operating Temperature Range (Note 3) ... –40°C to 85°C
Storage Temperature Range .................. –65°C to 125°C
ORDER PART NUMBER DD PART MARKING
T
JMAX
= 125°C,θ
JA
= 44°C/W,θ
JC
= 3°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
*V
SEL
ON LTC3203-1/LTC3203B-1. FB ON LTC3203/LTC3203B
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC3203EDD
LTC3203EDD-1
LTC3203BEDD-1
LTC3203BEDD
TOP VIEW
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1
C1
–
GND
C2
–
V
IN
MODE
C2
+
V
OUT
C1
+
SHDN
V
SEL
/FB*
11
LBQK
LCFH
LCGY
LCGX
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
LTC3203/LTC3203-1/LTC3203B/LTC3203B-1
V
IN
Input Voltage Range ● 2.7 5.5 V
I
SHDN
Shutdown Current SHDN = 0V, V
OUT
= 0V ● 1 µA
R
OL
Open Loop Output 2x Mode (Note 4), V
IN
= 2.7V, V
OUT
= 4.5V 2.0 3.0 Ω
Impedance 1.5x Mode (Note 4), V
IN
= 3.6V, V
OUT
= 4.5V 1.5 2.6 Ω
f
OSC
CLK Frequency Oscillator Free Running, 2x Mode 1.0 MHz
Oscillator Free Running, 1.5x Mode 0.9 MHz
V
MODEH
MODE Input High Voltage ● 0.874 0.91 0.946 V
V
MODEL
MODE Input Low Voltage ● 0.788 0.82 0.852 V
V
SHDNH
SHDN
Input High Voltage ● 1.3 V
V
SHDNL
SHDN Input Low Voltage ● 0.4 V
I
MODEH
MODE Input High Current ● –1 1 µA
I
MODEL
MODE Input Low Current ● –1 1 µA
I
SHDNH
SHDN Input High Current ● –1 1 µA
I
SHDNL
SHDN Input Low Current ● –1 1 µA
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full specified temperature
range, otherwise specifications are at 25°C. V
IN
= 3.6V, C1 = C2 = 2.2
µ
F unless otherwise specified.
LTC3203/LTC3203-1
LTC3203B/LTC3203B-1
3
32031fa
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full specified temperature
range, otherwise specifications are at 25°C. V
IN
= 3.6V, C1 = C2 = 2.2
µ
F unless otherwise specified.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Based on long-term current density limitations.
Note 3: The LTC3203/LTC3203-1/LTC3203B/LTC3203B-1 are guaranteed
to meet performance specifications from 0°C to 85°C. Specifications over
the –40°C to 85°C operating temperature range are assured by design,
characterization and correlation with statistical process controls.
Note 4: Output not in regulation (based on wafer sort):
R
OL
≡ (2 • V
IN
– V
OUT
)/I
OUT
, 2x Mode
R
OL
≡ (1.5 • V
IN
– V
OUT
)/I
OUT
, 1.5x Mode
Note 5: Proper conversion mode, 1.5x or 2x, has to be chosen based on
R
OL
to ensure output regulation.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
LTC3203-1/LTC3203B-1
V
OUT
4.5V Output Voltage Range V
IN
> 3.1V, I
OUT
< 500mA 4.32 4.5 4.68 V
(V
SEL
= 0V) (Note 5) V
IN
> 2.9V, I
OUT
< 350mA ● 4.32 4.5 4.68 V
V
IN
> 2.7V, I
OUT
< 250mA ● 4.32 4.5 4.68 V
5V Output Voltage Range V
IN
> 3.1V, I
OUT
< 500mA 4.8 5 5.2 V
(V
SEL
= V
IN
) (Note 5) V
IN
> 3.1V, I
OUT
< 400mA ● 4.8 5 5.2 V
V
IN
> 2.7V, I
OUT
< 150mA ● 4.8 5 5.2 V
∆V
OUT
/∆I
OUT
V
OUT
Load Regulation V
IN
= 3.6V, I
OUT
= 100mA to 500mA, 2x Mode, 0.37 mV/mA
V
IN
= 4V, I
OUT
= 100mA to 500mA, 1.5x Mode 0.27 mV/mA
I
CC
No Load Operating Current I
OUT
= 0mA, 2x Mode 120 300 µA
(LTC3203-1) I
OUT
= 0mA, 1.5x Mode 100 300 µA
No Load Operating Current I
OUT
= 0mA, 2x Mode 9 mA
(LTC3203B-1) I
OUT
= 0mA, 1.5x Mode 7 mA
V
VSELH
V
SEL
Input High Voltage ● 1.3 V
V
VSELL
V
SEL
Input Low Voltage ● 0.4 V
I
VSELH
V
SEL
Input High Current ● –1 1 µA
I
VSELL
V
SEL
Input Low Current ● –1 1 µA
LTC3203/LTC3203B
V
FB
Feedback Servo Voltage I
OUT
= 0mA, 2.7V ≤ V
IN
≤ 5.5V ● 0.88 0.91 0.94 V
I
FB
FB Input Current V
FB
= 0.95V ● –50 50 nA
∆V
FB
/∆I
OUT
Load Regulation I
OUT
= 100mA to 500mA, 2x Mode, V
IN
= 3.6V 0.08 mV/mA
(Refer to FB Pin) I
OUT
= 100mA to 500mA, 1.5x Mode, V
IN
= 4V 0.06 mV/mA
I
CC
No Load Operating Current I
OUT
= 0mA, 2x Mode, 5V V
OUT
Setting 120 300 µA
(LTC3203) I
OUT
= 0mA, 1.5x Mode, 5V V
OUT
Setting 100 300 µA
No Load Operating Current I
OUT
= 0mA, 2x Mode, 5V V
OUT
Setting 9 mA
(LTC3203B) I
OUT
= 0mA, 1.5x Mode, 5V V
OUT
Setting 7 mA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC3203BEDD-1#PBF

Mfr. #:
Buy LTC3203BEDD-1#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 500mA Out C L N 2x Mode Boost Ch Pumps
Lifecycle:
New from this manufacturer.
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