XC6403 Series

High Speed LDO Regulators,

Low ESR Cap. Compatible, Voltage Detector Function

September 18, 2003 V8

Low Power Consumption

: 35

A (TYP.)

APPLICATIONS

Dropout Voltage

: 60mV @ 30mA

Mobile phones, Cordless phones

: 200mV @ 100mA

Wireless communication equipment

Maximum Output Current

: more than 300mA (380mA limit)

Cameras, Video recorders

Highly Accurate

Portable games

VR Setting Output Voltage Range : 0.9V ~ 5.6V

Portable AV equipment

Detect Voltage Setting Range

: 0.9V ~ 5.5V (V

: >2.0V)

Reference voltage

Low ESR capacitor compatible

Battery powered equipment

GENERAL DESCRIPTION

FEATURES

Maximum Output Current

more than 300mA

(380mA limit)

Dropout Voltage

200mV (IROUT=100mA)

Operating Voltage Range

2.0V ~ 6.0V

VR Setting Output Voltage Range

0.9V ~ 5.6V

(100mV step,

2%)

Detect Voltage Setting Range

0.9V ~ 5.5V

(100mV step,

2%)

When monitoring VIN

more than 2.0V

VR.VD Temperature Coefficient

±100ppm/

C (TYP.)

Low Power Consumption

A (TYP.)

High Ripple Rejection

65dB (@10kHz)

Low Output Noise

30mVrms

Ultra Small Packages

SOT-25 (SOT-23-5)

SOT-89-5

USP-6B

Operating Temperature Range

- 40 ~ 85

Low ESR Capacitor Compatible

TYPICAL APPLICATION CIRCUITS

XC6403A ~ D Series

XC6403E Series

XC6403F Series

Semiconductor Ltd.

The XC6403 series are highly precise, low noise, positive voltage low
dropout regulators with built-in voltage detector.

They are fabricated

using Torex's CMOS process. Performance features of the series
includes high ripple rejection and low dropout voltage, and the series
features a voltage reference, an error amplifier, a current limiter and a
phase compensation circuit plus a driver transistor.
Detect voltage is selectable in 100mV increments within the range of
0.9V to 5.5V and the LDO output voltage is selectable within a range of
0.9V to 5.6V, also in 100mV increments.
The series is also compatible with low ESR ceramic capacitors which
give added output stability. This stability can be maintained even during
load fluctuations due to the excellent transient response of the series.
The current limiter's foldback circuit also operates as a short circuit
protection for the output current limiter and the output pin.
The series provides options to the user to select from a variety of circuit
features, such as detector monitoring, detector output logic, CE and EN
pin input logic, and internal pull-up / down resistance.
The IC's internal regulator circuit can be placed in stand-by mode via the
EN function (XC6403 A to C series). The whole IC can be put in to
stand-by mode via the CE function with the XC6403D series (semi-
custom). In the stand-by mode, power consumption is greatly reduced.
The XC6403 A and B series features the toggle operation function.

The

regulator output can be OFF when the XC6403B series detects voltage
(semi-custom).
The XC6403E series can monitor another power source by using the
VSEN pin (semi-custom).
The XC6403F series can delay the detector output: the delay time can be
controlled by the use of an external capacitor (semi-custom).

EN/CE

VIN

VSS

VDOUT

VROUT

Rpull
220K

1uF

Rpull
220K

1uF

VSEN

VIN

VSS

VDOUT

VROUT

Rpull
220K

1uF

Cd
0.01uF

VIN

VSS

VDOUT

VROUT

Data Sheet

XC6403 Series

High Speed LDO Regulators,

Low ESR Cap. Compatible, Voltage Detector Function

PIN CONFIGURATION

PIN ASSIGNMENT

SELECTION GUIDE

1. TOGGLE FUNCTION, VD SELF-SATURATION AS OPTION

2. STAND-BY MODE FUNCTION AS OPTION

3. CE / EN INPUT LOGIC, INTERNAL PULL-UP/DOWN AS OPTION (* : A ~ D Series)

4. VD SENSE AS OPTION (* : A ~ D and F Series)

5. VD OUTPUT LOGIC AS OPTION

6. VD DELAY FUNCTION AS OPTION

VDOUT
VROUT

FUNCTION

Power Input

Ground

VR ON / OFF Control

ON / OFF Control

VD Monitoring

Delay Capacitor Connection

4
2

PIN NUMBER

PIN NAME

VIN

VSS

EN
CE

VSEN

USP-6B

3
5
1
1
1
1
6

SOT-89-5

1
2
5
5
5
5
4

SERIES

VR with Stand-by mode function

STAND-BY MODE FUNCTION

TOGGLE FUNCTION (BUILT-IN)

XC6403A ~ C

VD Output
VR Output

CE INPUT LOGIC

XC6403A
XC6403B
XC6403C ~ F

VD with Toggle Function and Self-Saturation

VD with no Toggle Function

SERIES

VD with Toggle Function

XC6403E, F

Chip Stand-by mode function

XC6403D

No Stand-by mode function

SERIES

XC6403 * A ~ D

Active HIGH with pull down

XC6403 * R ~ U

Active LOW with no pull up

XC6403 * E ~ K

Active LOW with pull up

Active HIGH with no pull down

XC6403 * L ~ P

VD SENSE PIN

VIN

SERIES

XC6403 * A, B, E, F, L, M, R, S, V, X

XC6403 E V ~ Z

VSEN

VOUT

SERIES

VD OUTPUT LOGIC FUNCTION

XC6403 * C, D, H, K, N, P, T, U, Y, Z

XC6403A ~ F

Detect L or Detect H

SERIES

DELAY FUNCTION

XC6403A ~ E

No Delay

XC6403F

Delay time adjustable by connecting Cd

SOT-25

1
2
3
3
3
3
4

No connection

SOT-25 (TOP VIEW)

Semiconductor Ltd.

SOT-89-5 (TOP VIEW)

USP-6B (TOP VIEW)

EN/CE

VSEN/Cd

VIN

VSS

VDOUT

VROUT

VSS

VIN

EN/CE

VSEN/Cd

VDOUT

6
5
4

1
2
3

EN/CE

VSEN/Cd

VDOUT
VSS
VROUT

VIN

Data Sheet

XC6403 Series

High Speed LDO Regulators,

Low ESR Cap. Compatible, Voltage Detector Function

ORDERING INFORMATION

XC6403

123456

Optional Functions :

A : Toggle and EN Function (Preliminary *)

D : USP-6B

VD signal/VR OFF function (Preliminary *)

C : EN Function

M : SOT-25

D : CE Function

E : VSEN Pin

P : SOT-89-5

F : Cd Pin

Types :

As in the chart below.

Taping Direction:

R: Embossed Tape, Standard feed

L : Embossed Tape, Reverse feed

Detect Voltage Setting Range : 0.9V ~ 5.5V

100mV step increments are available

PIN NUMBER :

Types

* The XC6403A and XC6403B series are under development. For further detail, please ask your sales contacts.

F Series

E & F Series

PIN NUMBER

FUNCTION

PIN NUMBER

Packaging Types:

FUNCTION

VR Setting Output Voltage Range : 0.9V ~ 5.6V

B : Toggle, EN Function,

Internally set sequential number relating to output
voltage and detect voltage (refer to the chart on page
4.

EN / CE FUNCTION

EN / CE LOGIC

Function

VD SENSE PIN

VD OUTPUT LOGIC

PULL UP/DOWN

RESISTANCE

PIN NUMBER

Function

Nonfunctional

Active HIGH

Pull-down Function

Active HIGH

Pull-down Function

Active HIGH

Nonfunctional

Active HIGH

Nonfunctional

VIN

Detect L

Active HIGH

Pull-down Function

VIN

Detect H

VROUT

Detect L

Active HIGH

Pull-down Function

VROUT

Detect H

VIN

Detect L

Active HIGH

Nonfunctional

VIN

Detect H

VROUT

Detect L

Active HIGH

Nonfunctional

VROUT

Detect H

Active LOW

Pull-up Function

VIN

Detect L

Active LOW

Pull-up Function

VIN

Detect H

Active LOW

Pull-up Function

VROUT

Detect L

Nonfunctional

VIN

Detect L

Active LOW

Pull-up Function

VROUT

Detect H

A ~ D Series

Active LOW

Nonfunctional

VROUT

Detect L

Active LOW

Nonfunctional

VIN

Detect H

Active LOW

VIN / VSEN

Detect L

Active LOW

Nonfunctional

VROUT

Detect H

VOUT / VSEN

Detect H

VOUT / VSEN

Detect L

VIN / VSEN

Detect H

Semiconductor Ltd.

Data Sheet

XC6403 Series

High Speed LDO Regulators,

Low ESR Cap. Compatible, Voltage Detector Function

ORDERING INFORMATION

Pin Number

Type

(80 ~ 99 : Standard voltage products)

(34 : Hysteresis Range 3.0% (TYP.) for an error flag)

For the other voltages, please ask your sales contacts.

Ordering Example (Standard Products)

Except for the standard products, minimum ordering quantity is 15K.

1.80

2.40

1.80

3.00

2.85

2.55

2.80

1.80

3.00

2.70

2.60

2.40

1.80

1.70

3.30

4.00

3.50

3.80

3.00

4.20

3.00

3.30

1.80

2.90

1.80

2.40

2.80

VDOUT

4.30

2.85

2.70

VROUT

1.80

2.40

1.80

2.90

1.60

1.80

2.00

3.00

3.30

2.50

2.90

1.80

2.00

3.00

3.30

2.80

3.10

3.00

4.20

2.80

3.40

2.80

3.10

2.30

VROUT

VDOUT

3.30

3.10

2.40

3.20

2.80

4.00

1.80

VROUT

VDOUT

VROUT

VDOUT

1.80

1.60

3.10

1.80

2.00

2.50

2.80

2.85

3.20

VROUT

VDOUT

VOLTAGE

PRODUCT NAME

PRODUCT DESCRIPTION

3.30

3.00

1.60

XC6403CE81MR

EN function, Active HIGH, VIN Sense, Detect L

2.80

3.10

XC6403CH80MR

EN function, Active HIGH, VROUT Sense, Detect L

XC6403DE82MR