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LTC3200EMS8 Datasheet

  • LTC3200EMS8

  • Low Noise, Regulated Charge Pump DC/DC Converters

  • 12頁

  • LINER

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LTC3200/LTC3200-5
Low Noise, Regulated
Charge Pump DC/DC Converters
FEATURES
s
s
s
DESCRIPTIO
s
s
s
s
s
s
Low Noise Constant Frequency Operation
Output Current: 100mA
Available in 8-Pin MSOP (LTC3200) and Low
Profile (1mm) 6-Pin ThinSOT
TM
(LTC3200-5)
Packages
2MHz Switching Frequency
Fixed 5V
鹵
4% Output (LTC3200-5) or ADJ
V
IN
Range: 2.7V to 4.5V
Automatic Soft-Start Reduces Inrush Current
No Inductors
I
CC
<1碌A(chǔ) in Shutdown
The LTC
廬
3200/LTC3200-5 are low noise, constant fre-
quency switched capacitor voltage doublers. They pro-
duce a regulated output voltage from a 2.7V to 4.5V input
with up to 100mA of output current. Low external parts
count (one flying capacitor and two small bypass capaci-
tors at V
IN
and V
OUT
) make the LTC3200/LTC3200-5
ideally suited for small, battery-powered applications.
A new charge-pump architecture maintains constant
switching frequency to zero load and reduces both output
and input ripple. The LTC3200/LTC3200-5 have thermal
shutdown capability and can survive a continuous short-
circuit from V
OUT
to GND. Built-in soft-start circuitry
prevents excessive inrush current during start-up.
High switching frequency enables the use of small ceramic
capacitors. A low current shutdown feature disconnects
the load from V
IN
and reduces quiescent current to <1碌A(chǔ).
The LTC3200 is available in an 8-pin MSOP package and
the LTC3200-5 is available in a 6-pin ThinSOT.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
White LED Backlighting
Li-Ion Battery Backup Supplies
Local 3V to 5V Conversion
Smart Card Readers
PCMCIA Local 5V Supplies
TYPICAL APPLICATIO
Output Ripple Voltage vs Load Current
Regulated 5V Output from a 2.7V to 4.5V Input
1碌F
OUTPUT RIPPLE (mV
P-P
)
40
V
IN
= 3V
C
FLY
= 1碌F
T
A
= 25擄C
30
C
OUT
= 1碌F
20
4
C
鈥?/div>
V
IN
2.7V TO 4.5V
1碌F
5
2
3
OFF ON
V
IN
GND
SHDN
C
6
+
LTC3200-5
V
OUT
1
1碌F
V
OUT
= 5V
鹵4%
I
OUT
UP TO 40mA, V
IN
鈮?/div>
2.7V
I
OUT
UP TO 100mA, V
IN
鈮?/div>
3.1V
10
ALL CAPACITORS = MURATA GRM 39X5R105K6.3AJ
OR TAIYO YUDEN JMK107BJ105MA
0
3200-5 TA01
0
U
C
OUT
= 2.2碌F
50
75
25
OUTPUT CURRENT (mA)
100
3200 TA02
U
U
1

LTC3200EMS8 產(chǎn)品屬性

  • LTC3200/-5

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 切換式電容器（充電泵），倍增器

  • -

  • 1

  • -

  • 2.7 V ~ 4.5 V

  • -

  • 2MHz

  • 100mA

  • 無

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 管件

  • 8-MSOP

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