TOREX XC6505 User Manual

XC6505 Series

ETR0356-002a

Low Power Consumption, High Speed 200mA LDO Regulator - 10.5V Input

■GENERAL DESCRIPTION

Even the XC6505 series is a low power consumption such as 5.5μA, the IC is a high speed CMOS LDO regulator that

features high accurate, low noise, high ripple rejection, and low dropout. The series consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a phase compensation circuit and a thermal shutdown circuit.

The CE function enables the circuit to be in stand-by mode by inputting low level signal. In the stand-by mode, the series

enables the electric charge at the output capacitor C

quickly returns to the V

The over current protection circuit and the thermal shutdown circuit are built-in. These two protection circuits will operate

when the output current reaches current limit level or the junction temperature reaches temperature detection level.

level.

SS

■APPLICATIONS

●Car navigation systems

●Car audios

●Single-lens reflex DSC

●Digital video cameras

to be discharged via the internal switch, and as a result the V

L

OUT

■FEATURES

MaximumOutput Current Input Voltage : 1.7V ～ 10.5V Output Voltage : 1.5V ～ 8.0V (0.1V increments) Accuracy : ±1.0% (2.0V～8.0V)

±20mV (1.5V～1.9V)

Temperature Stability : ±30ppm/℃ Dropout Voltage : 190mV ＠ V Low Power Consumption Chip Enable(CE) : Active High

0.1μA (Stand-by)

High Ripple Rejection : 60dB＠1kHz Protection : Current Limiter (300mA, TYP.)

Thermal Shutdown

Operating Ambient Temperature Packages : USP-6C, SOT-25, SOT-89-5 Environmentally Friendly

: 200mA

=3.3V, I

OUT

: 5.5μA (TYP.)

Short circuit protection (110mA, TYP.)

: -40～+105℃

: EU RoHS Compliant, Pb Free

OUT

=100mA

■ TYPICAL APPLICATION CIRCUIT

■ TYPICAL PERFORMANCE

CHARACTERISTICS

[V]

Output Voltage: V

OUT

3.7

3.5

3.3

3.1

2.9

2.7

2.5

V

= 4.3V, C

IN

Output Voltage

Output Current

XC6505x331

I

= 1⇔100mA, tr = tf = 5μs, Ta = 25℃

OUT

= 1.0μF (ceramic), CL = 2.2μF (ceramic)

100mA

⇔

1mA

Time [100μs/div]

300

250

200

150

100

50

0

[mA]

OUT

Output Current: I

1/24

XC6505 Series

■PIN CONFIGURATION

*The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as to

enhance mounting strength and heat release.

If the pad needs to be connected to other pins, it should be connected to the V

(No. 5) pin.

SS

■PIN ASSIGNMENT

PIN NUMBER

USP-6C SOT-25 SOT-89-5

PIN NAME FUNCTIONS

1 1 4 VIN Power Input

3 5 5 V

Output

OUT

5 2 2 VSS Ground

6 3 3 CE ON/OFF Control

2,4 4 1 NC No connection

■ PRODUCT CLASSIFICATION

●Ordering Information

XC6505①②③④⑤⑥-⑦

DESIGNATOR ITEM SYMBOL DESCRIPTION

①

Type of Regulators

②③

④

⑤⑥-⑦

(*1)

The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.

(*2)

With CE Pull-down, please contact your local Torex sales office or representative.

Packages (Order Unit)

(*1)

(The Recommended Type)

Output Voltage

15～80 e.g. 2.8V → ②=2、③=8

Output Accuracy 1

ER-G USP-6C (3,000/Reel)

MR-G SOT-25 (3,000/Reel)

PR-G SOT-89-5 (1,000/Reel)

A without CE Pull-down, without CL Discharge

B

without CE Pull-down, with CL Discharge

±1.0% (2.0V～8.0V) ±20mV (1.5V～1.9V)

2/24

■BLOCK DIAGRAMS

V

IN

CurrentLimit

& TSD

CE

ON/OFF

Control

each

circuit

XC6505A Series

Error

Amp

CFB

+

-

Voltage

Reference

V

OUT

R1

R2

V

SS

V

IN

Error

Amp

CFB

+

-

Voltage

Reference

CurrentLimit

& TSD

each

CE

ON/OFF

Control

circuit

R1

R2

/CE

XC6505B Series

* Diodes inside the circuits are ESD protection diodes and parasitic diodes.

XC6505

Series

V

OUT

R

DCHG

V

SS

■ABSOLUTE MAXIMUM RATINGS

PAR AMETER SYMBOL RATINGS UNITS Input Voltage VIN V

Output Current I

Output Voltage

CE Input Voltage

450

OUT

V

OUT

V

CE

USP-6C 120

Power Dissipation

SOT-25 250

Pd

SOT-89-5

Power Dissipation

(*2)

(PCB mounted)

Operating Temperature Range

Storage Temperature Range

(*1) Please use within the range of Pd＞（VIN-V (*2) This is a reference data taken by using the test board. Please refer to page 20 for details.

USP-6C 1000

SOT-25 600

Pd

SOT-89-5

Topr -40～+105 ℃

Tst g -5 5～+125 ℃

）×I

OUT

-0.3～+12.0 V

SS

(*1)

mA

-0.3～VIN+0.3 V

SS

-0.3～+12.0 V

SS

500

1300

Ta=25℃

mW

3/24

XC6505 Series

■ELECTRICAL CHARACTERISTICS

●XC6505A/B Series

PAR AMETER SYMBOL CONDITIONS MIN. TYP. MAX.

(*3)

V

Output Voltage V

OUT(E)

(*2)

V

Maximum Output Current

I

OUTMAX

V

Load Regulation ΔV

Dropout Voltage

(*5)

Vdif VCE=VIN , I

VCE=VIN, 0.1mA≦I

OUT

V

Supply Current IDD

V

Stand-by Current I

Line Regulation

(ΔV

STB

ΔV

OUT

IN・VOUT

V

/

)

I

Input Voltage VIN 1.7 - 10.5 V ①

Output Voltage

Temperature

Characteristics

ΔV

OUT

(ΔTo pr ・V

Ripple Rejection Rate PSRR

V

/

)

-40℃≦To pr ≦105℃

OUT

V

Limit Current I

LIM

V

Short Current I

CE High Level Voltage V

CE Low Level Voltage V

CE High Level Current I

CE Low Level Current I

CL Auto-Discharge

Resistance

(*8)

Thermal Shutdown Detect

Temperature

Thermal Shutdown

Release Temperature

Thermal Shutdown

Hysteresis Width

VCE=VIN, Short V

SHORT

1.2 - V

CEH

V

CEL

V

CEH

V

CEL

R

VIN=10.5V, VCE=VSS, V

DCHG

Junction Temperature - 150 - ℃ -

T

TSD

Junction Temperature - 125 - ℃ -

T

TSR

T

HYS

＜ 2.0V

OUT(T)

, I

CE=VIN

OUT(T)

CE=VIN

OUT(T)

CE=VIN=VOUT(T)

OUT(T)

CE=VIN=VOUT(T)

OUT(T)

CE=VIN

OUT(T)

CE=VIN

=10.5V, VCE=VSS - 0.01 0.1 μA ②

IN

OUT(T)

=30mA

OUT

CE=VIN

=｛V

IN

CE=VIN

OUT(T)

CE=VIN=VOUT(T)

OUT(T)

CE=VIN=VOUT(T)

IN=VCE

CE=VSS

TSD

=10mA

OUT

≧ 2.0V

, I

=10mA

OUT

≦ 2.0V

+ 1.5V

＞ 2.0V

+ 1.0V

≦100mA - 20 40 mV ①

OUT

=100mA

OUT

≦ 5.0V

, I

=0mA

OUT

＞ 5.0V

, I

=0mA

OUT

+0.5V≦VIN≦10.5V,VCE=VIN,

, I

=30mA

OUT

+1.0｝VDC+0.5Vp-pAC

OUT(T)

, I

=30mA, f=1kHz

OUT

≦ 2.0V

+ 1.5V, V

OUT

= V

OUT(T)

×0.95

＞ 2.0V

+ 1.0V, V

to VSS level - 110 - mA ①

OUT

= V

OUT(T)

×0.95

=10.5V -0.1 - 0.1 μA ①

-0.1 - 0.1 μA ①

=5.0V 300 400 500 Ω ①

OUT

-T

- 25 - ℃ -

TSR

-0.02

×0.99

( *4)

V

OUT(T)

+0.02

×1.01

( *4)

200 - - mA ①

Refer to VOLTAGE CHART E-1

- 5.5 8.0

- 6.0 10.0

- 0.1 0.2 %/V ①

- ±30 -

Refer to VOLTAGE CHART E-2

dB ③

210 300 - mA ①

V ①

IN

- 0.45 V ①

SS

Ta =2 5℃

UNIT

S

CIRCUIT

V ①

mV ①

μA ②

ppm/

℃

①

NOTE:

(* 1) Unless otherwise stated, input voltage is V

(* 2) V (* 3) V (* 4) For the specified value of the effective output voltage V

(* 5) Vdif = V

(* 6) V

(* 7) V

(* 8) R

is defined as output voltages when an amply stabilized V

OUT(E)

is nominal output voltage

OUT(T)

(*6)

(*7)

-V

OUT1

IN1

is the input voltage when V

IN1

equals 98% of the output voltage when amply stabilized V

OUT1

is effective for the XC6505B Series only. The XC6505A Series discharges only through the resistance R1 + R2 in the block

DCHG

IN=VOUT(T)

appears at the V

diagram.

4/24

(*3)

＋1.0V.

of each nominal output voltage, refer to

OUT(E)

pin while input voltage is gradually decreased.

OUT

+1.0V is supplied to the VIN pin while maintaining a certain I

OUT(T)

+1.0V are supplied to the VIN pin.

OUT (T)

VOLTAGE CHART

E-0.

OUT

.

■ELECTRICAL CHARACTERISTICS (Continued)

E-0 E-1 E-2 E-0 E-1 E-2

NOMINAL

VOLTAGE

(V) (V) (mV) (dB) (V) (V) (mV) (dB)

V

OUT(T)

1.5 1.480 1.520 430 540 5.0 4.950 5.050 140 185

1.6 1.580 1.620 400 490 5.1 5.049 5.151 140 185

1.7 1.680 1.720 370 450 5.2 5.148 5.252 140 185

1.8 1.780 1.820 350 420 5.3 5.247 5.353 140 185

1.9 1.880 1.920 330 400 5.4 5.346 5.454 140 185

2.0 1.980 2.020 300 370 5.5 5.445 5.555 140 185

2.1 2.079 2.121 280 350 5.6 5.544 5.656 140 185

2.2 2.178 2.222 260 330 5.7 5.643 5.757 140 185

2.3 2.277 2.323 240 310 5.8 5.742 5.858 130 180

2.4 2.376 2.424 230 290 5.9 5.841 5.959 130 180

2.5 2.475 2.525 220 280 6.0 5.940 6.060 130 180

2.6 2.574 2.626 210 270 6.1 6.039 6.161 130 180

2.7 2.673 2.727 200 260 6.2 6.138 6.262 130 180

2.8 2.772 2.828 200 260 6.3 6.237 6.363 130 180

2.9 2.871 2.929 200 250 6.4 6.336 6.464 130 180

3.0 2.970 3.030 200 250 6.5 6.435 6.565 120 175

3.1 3.069 3.131 190 240 6.6 6.534 6.666 120 175

3.2 3.168 3.232 190 240 6.7 6.633 6.767 120 175

3.3 3.267 3.333 190 240 6.8 6.732 6.868 120 175

3.4 3.366 3.434 180 230 6.9 6.831 6.969 120 175

3.5 3.465 3.535 180 230 7.0 6.930 7.070 120 175

3.6 3.564 3.636 170 220 7.1 7.029 7.171 120 175

3.7 3.663 3.737 170 220 7.2 7.128 7.272 110 170

3.8 3.762 3.838 170 210 7.3 7.227 7.373 110 170

3.9 3.861 3.939 170 210

4.0 3.960 4.040 170 210 7.5 7.425 7.575 110 170

4.1 4.059 4.141 170 210 7.6 7.524 7.676 110 170

4.2 4.158 4.242 160 200 7.7 7.623 7.777 110 170

4.3 4.257 4.343 160 200 7.8 7.722 7.878 110 170

4.4 4.356 4.444 160 200 7.9 7.821 7.979 110 170

4.5 4.455 4.545 160 200 8.0 7.920 8.080 110 170

4.6 4.554 4.646 150 190

4.7 4.653 4.747 150 190

4.8 4.752 4.848 150 190

4.9 4.851 4.949 150 190

OUTPUT VOLTAGE

V

Vdif PSRR V

OUT(E)

MIN. MAX. TYP. MAX. TYP.

DROPOUT

VOLTAGE

Ripple

Rejection

Rate

60

55

NOMINAL

VOLTAGE

V

OUT(T)

7.4 7.326 7.474 110 170

OUTPUT

VOLTAGE

Vdif PSRR

OUT(E)

MIN. MAX. TYP. MAX. TYP.

DROPOUT

VOLTAGE

XC6505

Series

Ripple

Rejection

Rate

50

45

5/24

XC6505 Series

■ OPERATIONAL EXPLANATION

The voltage divided by resistors R1 & R2 is compared with the internal reference voltage by the error amplifier. The P-channel MOSFET which is connected to the V the V

pin is controlled and stabilized by a system of negative feedback. The current limit circuit and short protection circuit

OUT

operate in relation to the level of output current and heat dissipation. Further, the IC’s internal circuitry can be shutdown via the CE pin signal.

The XC6505 Series is able to shut down the regulator circuit using the CE pin signal. In the shutdown state, the V pulled down by R1 and R2 to the V and R2 when power is supplied to V is open, and thus the V

voltage or the VSS voltage should be input into the CE pin. Although the logic is fixed and operation is

IN

level. In the XC6505B Series, the CL discharge resistance is connected in parallel with R1

SS

, shortening the time until the VSS level is reached. Operation is unstable when the CE pin

IN

normal as long the voltage satisfies the CE pin voltage specification, inputting an intermediate voltage may cause the supply current to increase due to the flowthrough current in the IC internal circuit.

<C

Auto-Discharge Function>

L

The XC6505B type is capable of high-speed discharge of the charge that collects on the output capacitor (C accomplished by the N-channel MOSFET connected between the V when the L-level signal (IC internal circuit shutdown signal) of the CE pin is input. The C (when V

= 10.5 V, V

IN

= 5.0 V typical). The CL discharge time is determined by this CL discharge resistance and CL. Letting

OUT

the time constant of the CL discharge resistance R N-channel MOSFET can be obtained from the CR discharge equation below.

V= V

OUT(E)

×e

-t/

τ

or ｔ=τ×ln（V

V：Output voltage after discharge

：Output voltage

V

OUT(E)

t：Discharge time

auto-discharge resistance R

τ：C

L

The XC6505 series’ fold-back circuit operates as an output current limiter and a short protection circuit for the output pin. When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. When the output pin is short-circuited to the V

pin, the current falls and reaches about 110mA.

SS

The XC6505 Series has an internal thermal shutdown (TSD) circuit for protection against overheating. When the junction temperature reaches the detection temperature, the driver transistor is forcibly turned off. When the junction temperature falls to the release temperature with the driver transistor still in the off state, the driver transistor turns on (automatic recovery) and restarts regulator operation.

pin is then driven by the subsequent output signal. The output voltage at

OUT

below). This is

L

and VSS pins in the block diagram, and takes place

OUT

discharge resistance is set to 400 Ω

L

and CL be τ (τ = C × R), the output voltage after discharge by the

DCHG

/V）

OUT(E)

× CL Output capacitor value CL

DCHG

OUT

pin is

6/24

XC6505

Series

■ OPERATIONAL EXPLANATION

＜Input/output capacitor＞

The XC6505 Series uses an output capacitor (CL) for phase compensation. For this reason, if a small capacitor or low withstand-voltage capacitor is used for C results in unstable operation may occur. Exercise caution when selecting the capacitor. Recommended capacitances for the XC6505 Series are shown below. For the input capacitor (C

), select a capacitance of 1.0 µF or higher to stabilize the input power.

IN

Table1：Recommended C

capacitances

L

Manufacturer Product Number

TDK C2012X7R1C225K 2.2 2012 0805 2.0×1.25 16 -55～125

MURATA GRM21BR71C225K 2.2 2012 0805 2.0×1.25 16 -55～125

TAIYO YUDEN EMK212B7225K 2.2 2012 0805 2.0×1.25 16 -55～125

, DC bias dependence causes a smaller capacitance value, and phase shifting that

L

Capacity

[μF]

Size Unit

JIS EIA

Size

L×W [mm]

Withstand

Voltage

[V]

Temperature

Range

[℃]

■ NOTES ON USE

1. For temporary, transitional voltage drop or voltage rising phenomenon, the IC is liable to malfunction should the ratings be exceeded.

2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Please wire the input capacitor (C

3. If the input voltage fluctuates by 1.5 V or more and is at a slope of 0.1 V/µs or more, output voltage undershoot may become more pronounced. In this case, use a larger input capacitor (C less than 0.1 V/µs.

4. If a small capacitor is used for the output capacitor (C become more pronounced. This will increase the tendency for phase shifting to occur, resulting in unstable operation. Test thoroughly before using. For guidelines for the C

capacitance, check the XC6505 recommended capacitance characteristics (refer to

L

Operational Explanation, Input/Output Capacitors).

5. Torex places an importance on improving our products and its reliability. However, by any possibility, we would request user fail-safe design and post-aging treatment on system or equipment.

) and the output capacitor (CL) as close to the IC as possible.

IN

) or otherwise adjust so that the through rate is

IN

below), capacitance loss due to DC bias dependence will

L

7/24

XC6505 Series

■TEST CIRCUITS

●Circuit ①

●Circuit ②

●Circuit ③

8/24

TOREX XC6505 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual