CAT3200_07中文资料_数据手册_规格书

CAT3200, CAT3200-5

Low Noise Regulated Charge Pump DC-DC Converter

FEATURES

■ Thermal overload shutdown protection

■ Constant high frequency (2MHz) operation

■ 100mA output current

■ Low value external capacitors (1µF)

■ Foldback current overload protection

■ Shutdown current less than 1µA

■ Regulated output voltage (5V fixed CAT3200-5,

Adjustable CAT3200)

■ Low quiescent current (1.7mA typ.)

■ Input voltage operation down to 2.7V

■ Soft start, slew rate control

■ CAT3200-5 in low profile (1mm thin) 6-lead

SOT23 package

■ CAT3200 in MSOP-8 package

APPLICATIONS

■ 3V to 5V boost conversion

■ White LED driver

■ Local 5V supply from lower rail

■ Battery backup systems

■ USB On-The-Go 5V supply

■ Handheld portable devices

DESCRIPTION

A shutdown control input allows the device to be

placed in power-down mode, reducing the supply

current to less than 1µA.

The CAT3200 and CAT3200-5 are switched capacitor

boost converters that deliver a low noise, regulated

outputvoltage. TheCAT3200-5givesafixedregulated

5V output. The CAT3200 has an adjustable output

usingexternalresistors. Theconstantfrequency2MHz

charge pump allows small 1µF ceramic capacitors to

be used.

In the event of short circuit or overload conditions, the

device is fully protected by both foldback current

limiting and thermal overload detection. In addition, a

soft start, slew rate control circuit limits inrush current

during power-up.

Maximum output loads of up to 100mA can be

supported over a wide range of input supply voltages

(2.7V to 4.5V) making the device ideal for battery-

powered applications.

The CAT3200-5 is available in a 6-lead, 1mm max

thin SOT23 package. The CAT3200 is available in an

8-lead MSOP package.

TYPICAL APPLICATION

5V Output

Adjustable Output

CNEG

CPOS

CNEG

CPOS

5V

V

IN

OUT

FB

IN

OUT

V

IN

OUT

100mA

OUT

100mA

CAT3200-5

CAT3200

R

1

ON OFF

+

-

+

-

SHDN

3.3V

GND

R

2

(

R

1

2

V

= 1.27 V 1+

(

OUT

Characteristics subject to change without notice

Doc. No. MD-5002, Rev. L

1

CAT3200/3200-5

ORDERING INFORMATION

Quantity

per Reel

Part Number

Output Voltage

Package

Package Marking

CAT3200TDI-T3

CAT3200ZI-T3

CAT3200ZI-GT3

5V

6-lead thin SOT23, Lead Free

8-lead MSOP, Lead Free

8-lead MSOP, NiPdAu

LN

3,000

3.000

Adjustable

ABME

ABRU

PIN DESCRIPTIONS

Designation

Description

OUT

GND

SHDN

CNEG

IN

Regulated output voltage.

Ground reference for all voltages.

Shutdown control logic input (Active LOW)

Negative connection for the flying capacitor.

Input power supply.

CPOS

FB

Positive connection for the flying capacitor.

Feedback to set the output voltage.

Power ground.

PGND

SGND

Signal ground.

PIN CONFIGURATION

6-lead Thin SOT23

8-pin MSOP

OUT

FB

CPOS

IN

1

2

3

4

8

7

6

5

OUT

GND

1

2

3

6

5

4

CPOS

IN

CAT3200-5

CAT3200

CNEG

PGND

SHDN

SGND

SHDN

CNEG

Characteristics subject to change without notice

Doc. No. MD-5002, Rev. L

2

CAT3200/3200-5

ABSOLUTE MAXIMUM RATINGS

Power Dissipation (8-MSOP).............................0.5W

V_IN, V_OUT, SHDN, C_NEG, C_POSVoltage.. -0.6V to 6.0V

V_OUTShort Circuit Duration......................... Indefinite

Output Current ................................................200mA

ESD Protection (HBM) .....................................2000V

Junction Temperature ...................................... 150°C

Storage Temperature Range .............-65°C to 160°C

Lead Soldering Temperature (10 sec)............. 300°C

Power Dissipation (SOT23-6) ............................ 0.3W

RECOMMENDED OPERATING CONDITIONS

V_IN................................................................................... 2.7V to 4.5V

C_IN, C_OUT, C_FLY.......................................................................... 1µF

I_LOAD................................................................................. 0 to 100mA

Ambient Temperature Range................... -40°C to 85°C

ELECTRICAL SPECIFICATIONS

Recommended operating conditions unless otherwise specified. C_IN, C_OUT, C_FLYare 1µF ceramic capacitors and V_IN

is set to 3.6V.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

V_OUT

Regulated Output

I

_LOAD≤ 40mA, V_IN≥ 2.7 V

_LOAD≤ 100mA, V_IN≥ 3.1 V

4.8

5.0

5.2

V

V_LINE

V_LOAD

F_OSC

V_R

Line Regulation

3.1V ≤ V_IN≤ 4.5V, I_LOAD= 50mA

6

mV

Load Regulation

Switching Frequency

I_LOAD= 10mA to 100mA, V_IN= 3.6V

20

2.0

30

1.3

2.6

MHz

mVp-p

Output Ripple

Voltage

I_LOAD= 100mA

CAT3200-5 Only

η

Efficiency

I_LOAD= 50mA, V_IN= 3V, CAT3200-5

I_LOAD= 0mA, SHDN = V_IN

80

%

I_GND

I_SHDN

Ground Current

1.6

4

1

mA

µA

Shutdown Input

Current

I_LOAD= 0mA, SHDN = 0V to V_IN

V_FB

I_FB

FB Voltage

CAT3200 Only

1.22

-50

1.27

10

1.32

50

V

nA

Ω

FB Input Current

Open-Loop

CAT3200 Only

R_OL

I_LOAD= 100mA, V_IN= 3V (Note 1)

Resistance

T_ON

V_OUTTurn-on time

(10% to 90%)

I_LOAD= 0mA, V_IN= 3V

0.5

0.8

ms

V_IHSHDN

V_ILSHDN

I_ROUT

High Detect

Shutdown Threshold

1.3

30

V

Low Detect

Shutdown Threshold

0.4

Reverse Leakage

into OUT pin

V_OUT= 5V, Shutdown mode (Note 2)

V_OUT= 0V

15

µA

I_SC

T_SD

Short-circuit Output

Thermal Shutdown

Thermal Hysteresis

80

160

20

mA

°C

T_HYST

°C

Note 1: R_OL= (2V_IN- V_OUT)/I_OUT

Note 2: In the event of a controlled shutdown, the output will be isolated from the input, but will remain connected to the internal resistor

feedback network. This will cause a small level of reverse current to flow back into the device to ground.

Characteristics subject to change without notice

Doc No. MD-5002, Rev. L

3

CAT3200/3200-5

TYPICAL PERFORMANCE CHARACTERISTICS (CAT3200-5)

T_AMB=25°C, C_IN=C_OUT=C_FLY=1µF, V_IN=3.3V unless specified otherwise.

Shutdown Input Threshold vs. Supply Voltage

Ground Current vs. Supply Voltage (No Load)

2.2

2.0

1.8

1.6

1.4

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

2.7

3.0

3.3

3.6

3.9

INPUT VOLTAGE [V]

4.2

4.5

2.7

3.0

3.3

3.6

3.9

INPUT VOLTAGE [V]

4.2

4.5

Line Regulation

Load Regulation

5.2

5.1

5.0

4.9

4.8

5.2

5.1

5.0

4.9

4.8

20mA Load

VIN = 3.2V

100mA Load

VIN = 3V

VIN = 2.7V

0

50 100

LOAD CURRENT [mA]

150

2.7

3.0

3.3

3.6

3.9

INPUT VOLTAGE [V]

4.2

4.5

Oscillator Frequency vs. Supply Voltage

Efficiency vs. Load Current

2.6

100

90

VIN=

2.7V

2.4

2.2

2.0

1.8

1.6

VIN=3.2V

80

3.7V

VIN=

70

60

50

4.5V

VIN=

40

30

1

100

10

LOAD CURRENT [mA]

2.7

3.0

3.3

3.6

3.9

INPUT VOLTAGE [V]

4.2

4.5

Characteristics subject to change without notice

Doc. No. MD-5002, Rev. L

4

CAT3200/3200-5

TYPICAL PERFORMANCE CHARACTERISTICS (CAT3200-5)

T_AMB=25°C, C_IN=C_OUT=C_FLY=1µF, V_IN=3.3V unless specified otherwise.

Soft Start Power Up (90mA Load, 3.3V Input)

Load Step Response (3.3V Input)

Output Ripple (100mA Load, 3.3V Input)

Short Circuit Current vs Supply Voltage

250

200

150

100

50

0

2.7

3.0

3.3

3.6

3.9

INPUT VOLTAGE [V]

4.2

4.5

Output Voltage Change vs. Temperature

Oscillator Frequency Change vs. Temperature

2

4

1

2

0

10mA Load

0

-1

-2

-4

-40 -20

0

20

40

TEMPERATURE [ C]

60

80 100

-40 -20

0

20

40

TEMPERATURE [ C]

60

80 100

Characteristics subject to change without notice

Doc No. MD-5002, Rev. L

5

CAT3200/3200-5

BLOCK DIAGRAM

CNEG CPOS

2V

IN

2V

2MHz

Voltage

Doubler

IN

2MHz

Voltage

Doubler

IN

SHDN

EN

+

—

5V/100mA

OUT

FB

1.25V

5V

OUT

100mA

300k

100k

SGND

GND

PGND

CAT3200 Adjustable Output

CAT3200-5 5V Fixed Output

PIN FUNCTIONS

IN is the power supply. During normal operation the

device draws a supply current which is almost constant.

A very brief interval of non-conduction will occur at the

switchingfrequency.Thedurationofthenon-conduction

interval is set by the internal non-overlapping

“break-before-make” timing. IN should be bypassed

with a 1µF to 4.7µF low ESR (Equivalent Series

Resistance) ceramic capacitor.

resistor network (400kΩ). The feedback network will

result in a reverse current of 10µA to 20µA to flow back

through the device to ground.

Wheneverthedeviceistakenoutofshutdownmode,the

output voltage will experience a slew rate controlled

power-up. Full operating voltage is typically achieved in

less than 0.5 msec.

For filtering, a low ESR ceramic bypass capacitor (1µF)

incloseproximitytotheINpinpreventsnoisefrombeing

injected back into the power supply.

GNDisthegroundreferenceforallvoltagesonCAT3200-

5 devices.

SHDN is the logic control input (Active LOW) that places

the device into shutdown mode. The internal logic is

CMOS and the pin does not use an internal pull-down

resistor. The SHDN pin should not be allowed to float.

FB (CAT3200 Only) is the feedback input pin. An output

divider should be connected from OUT to FB to program

the output voltage.

CPOS,CNEGarethepositiveandnegativeconnections

respectively for the charge pump flying capacitor. A low

ESR ceramic capacitor (1µF) should be connected

between these pins. During initial power-up it may be

possibleforthecapacitortoexperienceavoltagereversal

and for this reason, avoid using a polarized (tantalum or

aluminum) flying capacitor.

PGND (CAT3200 Only). Is the same as GND for the

CAT3200-5 except for the internal reference connection

to SGND.

SGND (CAT3200 Only) Ground pin for the internal

reference. The CNEG connection is switched to this pin

during the normal charge pump operation.

OUT is the regulated output voltage to power the load.

During normal operation, the device will deliver a train of

current pulses to the pin at a frequency of 2MHz.

Adequate filtering on the pin can typically be achieved

through the use a low ESR ceramic bypass capacitor

(1µF to 4.7µF) in close proximity to the OUT pin. The

ESR of the output capacitor will directly influence the

output ripple voltage.

When the shutdown mode is entered, the output is

immediatelyisolatedfromtheinputsupply,however,the

output will remain connected to the internal feedback

Characteristics subject to change without notice

Doc. No. MD-5002, Rev. L

6

CAT3200/3200-5

Typical values for total voltage divider resistance can

range from several kΩs up to 1MΩ.

DEVICE OPERATION

The CAT3200/CAT3200-5 use a switched capacitor

charge pump to boost the voltage at IN to a regulated

output voltage. Regulation is achieved by sensing the

output voltage through an internal resistor divider

(CAT3200-5) and modulating the charge pump output

current based on the error signal. A 2-phase non-

overlapping clock activates the charge pump switches.

TheflyingcapacitorischargedfromtheINvoltageonthe

firstphaseoftheclock. Onthesecondphaseoftheclock

itisstackedinserieswiththeinputvoltageandconnected

toOUT.Thecharginganddischargingtheflyingcapacitor

continues at a free running frequency of typically 2MHz.

1

3

CNEG

CPOS

V

2

OUT

8

IN

OUT

R1

1 +

1.27V

( )

R2

R1

R2

FB ⁷

C

OUT

PGND ⁴

SGND ⁵

6

SHDN

In shutdown mode all circuitry is turned off and the

CAT3200/CAT3200-5 draw only leakage current from

the V_INsupply. OUT is disconnected from IN. The SHDN

pin is a CMOS input with a threshold voltage of

approximately 0.8V. The CAT3200/CAT3200-5 is in

shutdown when a logic LOW is applied to the SHDN pin.

The SHDN pin is a high impedance CMOS input. SHDN

does not have an internal pull-down resistor and should

not be allowed to float and. It must always be driven with

a valid logic level.

Figure 1: Programming the Adjustable CAT3200

Short-Circuit and Thermal Protection

TheCAT3200andCAT3200-5havebuilt-inshort-circuit

current limiting and over temperature protection. During

overload conditions, output current is limited to

approximately 225mA. At higher temperatures, or if the

inputvoltageishighenoughtocauseexcessivechipself

heating, the thermal shutdown circuit shuts down the

charge pump as the junction temperature exceeds

approximately 160°C. Once the junction temperature

drops back to approximately 140°C, the charge pump is

enabled. The CAT3200and CAT3200-5 will cycle in and

out of thermal shutdown indefinitely without latch-up or

damage until a short-circuit on OUT is removed.

Programming the CAT3200 Output Voltage (FB Pin)

The CAT3200-5 version has an internal resistive divider

to program the output voltage. The programmable

CAT3200 may be set to an arbitrary voltage via an

external resistive divider. Since it employs a voltage

doubling charge pump, it is not possible to achieve

output voltages greater than twice the available input

voltage. Figure 1 shows the required voltage divider

connection. The voltage divider ratio is given by the

formula:

R1

V

OUT

=

− 1

R2 1.27V

Characteristics subject to change without notice

Doc No. MD-5002, Rev. L

7

CAT3200/3200-5

APPLICATION INFORMATION

Ceramic Capacitors

Ceramic capacitors of different dielectric materials lose

theircapacitancewithhighertemperatureandvoltageat

different rates. For example, a capacitor made of X5R or

X7R material will retain most of its capacitance from –

40°C to 85°C whereas a Z5U or Y5V style capacitor will

lose considerable capacitance over that range.

The overall junction to ambient thermal resistance (θ_JA)

for device power dissipation (P_D) consists primarily of

two paths in series. The first path is the junction to the

case (θ_JC) which is defined by the package style, and the

second path is case to ambient (θ_CA) thermal resistance

which is dependent on board layout. The final operating

junction temperature for any set of conditions can be

estimated by the following thermal equation:

T_JUNC= T_AMB+ P (Θ_JC) + P (Θ_CA)

D

Z5UandY5Vcapacitorsmayalsohavevoltagecoefficient

causing them to lose 60% or more of their capacitance

when the rated voltage is applied. When comparing

differentcapacitorsitisoftenusefulconsidertheamount

of achievable capacitance for a given case size rather

than discussing the specified capacitance value. For

example,overratedvoltageandtemperatureconditions,

a 1µF, 10V, Y5V ceramic capacitor in an 0603 case may

not provide any more capacitance than a 0.22µF, 10V,

X7R available in the same 0603 case. For many

CAT3200/CAT3200-5applicationsthesecapacitorscan

be considered roughly equivalent.

= T_AMB+ P (Θ_JA)

D

The CAT3200 in SOT23 package, when mounted on

printed circuit board with two square inches of copper

allocated for “heat spreading”, will result with an overall

θ_JAof less than 150°C/W.

For a typical application operating from a 3.8V input

supply, the maximum power dissipation is 260mW

(100mA x 3V). This would result if a maximum junction

temperature of :

The capacitor manufacturer’s data sheet should be

consultedtodeterminewhatvalueofcapacitorisneeded

to ensure the desired capacitance at all temperatures

and voltages. Below is a list of ceramic capacitor

manufacturers and how to contact them:

T

JUNC = TAMB + P (θJA)

D

= 85°C + 0.26W (150°C/W)

= 85°C + 39°C = 124°C

The use of multi-layer board construction with power

planes will further enhance the overall thermal

performance. In the event of no dedicated copper area

being used for heat spreading, a multi-layer board will

typically provide the CAT3200 with an overall θ_JAof

200°C/W. This level of thermal conduction would allow

up to 200mW be safely dissipated within the device.

Capacitor

Manufacturer Web

Phone

Murata

www.murata.com

814.237.1431

843.448.9411

AVX/Kemet

Vishay

www.avxcorp.com

www.vishay.com

www.kemet.com

Kemet

408.986.0424

408.573.4150

Taiyo Yuden www.t-yuden.com

Thermal Management

For higher input voltages and maximum output current

there can be substantial power dissipation in the

CAT3200/CAT3200-5. If the junction temperature

increases to 160°C, the thermal shutdown circuitry will

automatically turn off the output.

A good thermal connection to the PC board is

recommended to reduce the chip temperature.

ConnectingtheGNDpin(Pins4/5forCAT3200,Pin2for

CAT3200-5) to a ground plane, and maintaining a solid

ground plane under the device reduces the overall

thermal resistance.

Characteristics subject to change without notice

Doc. No. MD-5002, Rev. L

8

CAT3200/3200-5

TYPICAL APPLICATIONS

3.3 V Supply to 5 V

USB Port to Regulated 5V Power Supply

4

6

4

6

5

3

1

5

3

1

IN

OUT

IN

OUT

3.3 V + 10%

SHDN

CAT3200-5

SHDN

V

OUT

V

OUT

5V + 4%

100mA

CAT3200-5

5V + 4%

GND

2

GND

2

Lithium-Ion Battery to 5V White or Blue LED Driver

4

-

6

+

C

Drive up to 5 LEDs

5

1

2

OUT

CAT3200-5

IN

3V to 4.4V

+

Li-ion

100Ω

Battery

3

SGND

SHDN

ON OFF

Apply PWM Waveform for

Adjustable Brightness Control

V

t

White or Blue LED Driver with LED Current Control

1

+

3

-

C

Up to 6 LEDs

2

8

7

IN

OUT

3V to 4.4V

+

Li-ion

Battery

CAT3200

FB

5

4

PGND

SGND

82Ω

6

ON OFF

SHDN

Apply PWM Waveform for

Adjustable Brightness Control

V

t

Characteristics subject to change without notice

Doc No. MD-5002, Rev. L

9

CAT3200/3200-5

PACKAGE OUTLINE DRAWING

TSOT-23 6-Lead (TD)⁽¹⁾⁽²⁾

SYMBOL

MIN

NOM

MAX

1.00

0.10

0.90

0.45

0.20

D

A

A1

A2

b

e

0.01

0.80

0.30

0.12

0.05

0.87

c

0.15

D

2.90 BSC

2.80 BSC

1.60 BSC

0.95 TYP

0.40

E1

E

E1

e

L

0.30

0º

0.50

8º

L1

L2

θ

0.60 REF

0.25 BSC

TOP VIEW

A2 A

θ

L

b

c

A1

L2

L1

SIDE VIEW

END VIEW

For current Tape and Reel information, download the PDF file from:

http://www.catsemi.com/documents/tapeandreel.pdf.

Note:

(1) All dimensions are in millimeters. Angles in degrees.

(2) Complies with JEDEC standard MO-193.

Characteristics subject to change without notice

Doc. No. MD-5002, Rev. L

10

CAT3200/3200-5

MSOP 8-Lead 3.0 x 3.0mm (Z)⁽¹⁾⁽²⁾

SYMBOL

MIN

NOM

MAX

1.10

0.15

0.95

0.38

0.23

3.10

5.00

3.10

A

A1

A2

b

0.05

0.75

0.22

0.13

2.90

4.80

2.90

0.10

0.85

c

D

3.00

4.90

E

E1

e

3.00

0.65 BSC

0.60

L

0.40

0º

0.80

6º

L1

L2

θ

0.95 REF

0.25 BSC

TOP VIEW

D

A2

A

DETAIL A

A1

e

b

c

SIDE VIEW

END VIEW

θ

L2

L

L1

DETAIL A

For current Tape and Reel information, download the PDF file from:

http://www.catsemi.com/documents/tapeandreel.pdf.

Note:

(1) All dimensions are in millimeters. Angles in degrees.

(2) Complies with JEDEC standard MO-187.

Characteristics subject to change without notice

Doc No. MD-5002, Rev. L

11

REVISION HISTORY

Date

Rev.

Reason

06/17/2004

09/3/2004

A

B

C

D

E

F

G

H

I

Initial Release

Update Ordering Information

Minor change

09/23/2004

10/26/2004

10/29/2004

02/1/2005

Removed TDFN package, minor changes

Added Green Packages

Update 6-lead SOT-23 mechanical package drawing

Update Ordering Information

Change MSOP Tape&Reel

02/28/2005

03/18/2005

09/22/2005

01/11/2006

08/01/2006

10/29/2007

J

K

L

Update Ordering Information

Update Package Outline Drawings

Add MD- to Document Number

Copyrights, Trademarks and Patents

Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:

Adaptive Analog™, Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™, Quad-Mode™ and Quantum Charge Programmable™

Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products.

CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS

PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE

RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING

OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.

Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or

other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a

situation where personal injury or death may occur.

Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets

labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale.

Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate

typical semiconductor applications and may not be complete.

Catalyst Semiconductor, Inc.

Corporate Headquarters

2975 Stender Way

Santa Clara, CA 95054

Phone: 408.542.1000

Fax: 408.542.1200

www.catsemi.com

Publication #: MD-5002

Revison:

L

Issue date:

10/29/07

型号	制造商	描述	价格	文档
CAT3224	ONSEMI	4 Amp Supercapacitor Flash LED Driver	获取价格
CAT3224HV3-GT2	ONSEMI	4 Amp Supercapacitor Flash LED Driver	获取价格
CAT32C101J	ETC	Microwire Serial EEPROM	获取价格
CAT32C101J-TE13	ETC	Microwire Serial EEPROM	获取价格
CAT32C101J-TE7	ETC	Microwire Serial EEPROM	获取价格
CAT32C101K	ETC	Microwire Serial EEPROM	获取价格
CAT32C101K-TE13	ETC	Microwire Serial EEPROM	获取价格
CAT32C101K-TE7	ETC	Microwire Serial EEPROM	获取价格
CAT32C101KI	ETC	Microwire Serial EEPROM	获取价格
CAT32C101P	ETC	Microwire Serial EEPROM	获取价格

CAT3200_07

CAT3200_07 概述

CAT3200_07 数据手册

CAT3200_07 相关器件

CAT3200_07 相关文章

热门型号