MICROCHIP MCP1827, MCP1827S Technical data

MCP1827/MCP1827S

Fixed/Adjustable 3-LD DDPAK

5-LD DDPAK

3-LD TO-220

5-LD TO-220

12345

123

PWRGD

SHDN

V

IN

GND(TAB)

V

OUT

ADJ

SHDN

V

IN

GND(TAB)

V

OUT

V

IN

GND(TAB)

V

OUT

V

IN

GND(TAB)

V

OUT

MCP1827

MCP1827S

1.5A, Low Voltage, Low Quiescent Current LDO Regulator

Features

• 1.5A Output Current Capability

• Input Operating Voltage Range: 2.3V to 6.0V

• Adjustable Output Voltage Range: 0.8V to 5.0V (MCP1827 only)

• Standard Fixed Output Voltages:

- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V

• Other Fixed Output Voltage Options Available Upon Request

• Low Dropout Voltage: 330 mV Typical at 1.5A

• Typical Output Voltage Tolerance: 0.5%

• Stable with 1.0 µF Ceramic Output Capacitor

• Fast response to Load Transients

• Low Supply Current: 120 µA (typ)

• Low Shutdown Supply Current: 0.1 µA (typ) (MCP1827 only)

• Fixed Delay on Power Good Output (MCP1827 only)

• Short Circuit Current Limiting and Overtemperature Protection

• 5-Lead Plastic DDPAK, 5-Lead TO-220 Package Options (MCP1827)

• 3-Lead Plastic DDPAK, 3-Lead TO-220 Package Options (MCP1827S)

Applications

• High-Speed Driver Chipset Power

• Networking Backplane Cards

• Notebook Computers

• Network Interface Cards

• Palmtop Computers

• 2.5V to 1.XV Regulators

Description

The MCP1827/MCP1827S is a 1.5A Low Dropout (LDO) linear regulator that provides high current and low output voltages. The MCP1827 comes in a fixed or adjustable output voltage version, with an output voltage range of 0.8V to 5.0V. The 1.5A output current capability, combined with the low output voltage capability, make the MCP1827 a good choice for new sub-1.8V output voltage LDO applications that have high current demands. The MCP1827S is a 3-pin fixed voltage version. The MCP1827/MCP1827S is based upon the MCP1727 LDO device.

The MCP1827/MCP1827S is stable using ceramic output capacitors that inherently provide lower output noise and reduce the size and cost of the entire regulator solution. Only 1 µF of output capacitance is needed to stabilize the LDO.

Using CMOS construction, the quiescent current consumed by the MCP1827/MCP1827S is typically less than 120 µA over the entire input voltage range, making it attractive for portable computing applications that demand high output current. The MCP1827 versions have a Shutdown (S

HDN) pin. When shut

down, the quiescent current is reduced to less than

0.1 µA. On the MCP1827 fixed output versions the

scaled-down output voltage is internally monitored and a power good (PWRGD) output is provided when the output is within 92% of regulation (typical). The PWRGD delay is internally fixed at 200 µs (typical).

The overtemperature and short circuit current-limiting provide additional protection for the LDO during system fault conditions.

Package Types

MCP1827/MCP1827S

MCP1827 Adjustable Output Voltage

MCP1827 Fixed Output Voltage

V

OUT

= 1.8V @ 1A

VIN = 2.3V to 2.8V

On

Off

1µF

100 kΩ

4.7 µF

C

1

C

2

R

1

SHDN

V

IN

GND

V

OUT

PWRGD

20 kΩ

R

2

VAD J

12345

V

OUT

= 1.2V @ 1A

VIN = 2.3V to 2.8V

On

Off

1µF

40 kΩ

4.7 µF

C

1

C

2

R

1

SHDN

V

IN

GND

V

OUT

12345

Typical Application

Functional Block Diagram - Adjustable Output

EA

+

–

V

OUT

PMOS

R

f

C

f

I

SNS

Overtemperature

V

REF

Comp

92% of V

REF

T

DELAY

V

IN

Driver w/limit

and SHDN

GND

Soft-Start

ADJ

Undervoltage

Lock Out

V

IN

Reference

SHDN

Sensing

(UVLO)

MCP1827/MCP1827S

EA

+

–

V

OUT

PMOS

R

f

C

f

I

SNS

V

REF

Comp

92% of V

REF

T

DELAY

V

IN

GND

Soft-Start

Sense

V

IN

Reference

SHDN

PWRGD

Overtemperature

Driver w/limit

and SHDN

Undervoltage

Lock Out

Sensing

(UVLO)

Functional Block Diagram - Fixed Output (5 pin)

Functional Block Diagram - Fixed Output (3-Pin)

EA

+

–

V

OUT

PMOS

R

f

C

f

I

SNS

V

REF

Comp

92% of V

REF

T

DELAY

V

IN

GND

Soft-Start

Sense

V

IN

Reference

SHDN

Overtemperature

Driver w/limit

and SHDN

Undervoltage

Lock Out

Sensing

(UVLO)

MCP1827/MCP1827S

1.0 ELECTRICAL CHARACTERISTICS

† Notice: Stresses above those listed under “Maximum Rat-

ings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the

Absolute Maximum Ratings †

VIN....................................................................................6.5V

Maximum Voltage on Any Pin.. (GND – 0.3V) to (V

DD

+ 0.3)V

operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Maximum Power Dissipation......... Internally-Limited (Note 6)

Output Short Circuit Duration ................................ Continuous

Storage temperature .....................................-65°C to +150°C

Maximum Junction Temperature, T ESD protection on all pins (HBM/MM)

...........................+150°C

J

........... ≥ 2kV; ≥ 200V

AC/DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, V

I

= 1 mA, CIN = C

OUT

-40°C to +125°C

= 4.7 µF (X7R Ceramic), TA = +25°C. Boldface type applies for junction temperatures, TJ (Note 7) of

OUT

Parameters Sym Min Typ Max Units Conditions

Input Operating Voltage V Input Quiescent Current I

Input Quiescent Current for SHDN

Mode

Maximum Output Current I

Line Regulation

Load Regulation

Output Short Circuit Current I

I

ΔV

(V

OUT

ΔV

OUT/VOUT

OUT_SC

IN

q

SHDN

OUT

x ΔVIN)

/

Adjust Pin Characteristics (Adjustable Output Only)

Adjust Pin Reference Voltage V

Adjust Pin Leakage Current I Adjust Temperature Coefficient TCV

ADJ

OUT

Fixed-Output Characteristics (Fixed Output Only) Note 1: The minimum V

must meet two conditions: V

IN

2: VR is the nominal regulator output voltage for the fixed cases. VR = 1.2V, 1.8V, etc. VR is the desired set point output

voltage for the adjustable cases. V

3: TCV

= (V

OUT

OUT-HIGH

temperature range. V

– V

OUT-LOW

R

) *106 / (VR * ΔTemperature). V

OUT-LOW

is the lowest voltage measured over the temperature range.

4: Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is

tested over a load range from 1 mA to the maximum specified output current.

5: Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its

nominal value that was measured with an input voltage of V

6: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction

temperature and the thermal resistance from junction to air. (i.e., T dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained junction temperatures above 150°C can impact device reliability.

7: The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the

desired junction temperature. The test time is small enough such that the rise in the junction temperature over the ambient temperature is not significant.

IN

= V

OUT(MAX)

+ V

DROPOUT(MAX)

Note 1, VR=1.8V for Adjustable Output,

2.3 6.0 V Note 1 — 120 220 µA IL = 0 mA, VIN = Note 1,

V

= 0.8V to 5.0V

OUT

—0.1 3 µA SHDN = GND

1.5 —— AV

= 2.3V to 6.0V

IN

V

= 0.8V to 5.0V, Note 1

R

—0.050.16 %/V (Note 1)

-1.0 ±0.5 1.0 %I

—2.2— AV

= 1 mA to 1.5A,

OUT

V

= Note 1, (Note 4)

IN

= Note 1, R

IN

Peak Current

0.402 0.410 0.418 VVIN = 2.3V to VIN=6.0V,

I

= 1 mA

OUT

-10 ±0.01 +10 nA VIN = 6.0V, V —40—ppm/°CNote 3

= V

≥ 2.3V and V

IN

((R1/R2)+1). Figure 4-1.

ADJ *

≥ V

IN

OUT(MAX)

OUT-HIGH

IN = VOUTMAX

, TJ, θJA). Exceeding the maximum allowable power

A

+ V

DROPOUT(MAX).

is the highest voltage measured over the

+ V

DROPOUT(MAX)

.

≤ V

IN

≤ 6V

LOAD

=0Vto6V

ADJ

<0.1Ω,

MCP1827/MCP1827S

AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise noted, V

I

= 1 mA, CIN = C

OUT

-40°C to +125°C

= 4.7 µF (X7R Ceramic), TA = +25°C. Boldface type applies for junction temperatures, TJ (Note 7) of

OUT

Parameters Sym Min Typ Max Units Conditions

Voltage Regulation V

OUT

Dropout Characteristics

Dropout Voltage V

IN-VOUT

Power Good Characteristics

PWRGD Input Voltage Operat-

V

PWRGD_VIN

ing Range

PWRGD Threshold Voltage (Referenced to V

OUT

)

PWRGD Threshold Hysteresis V PWRGD Output Voltage Low V

PWRGD Leakage P PWRGD Time Delay T

Detect Threshold to PWRGD

V

PWRGD_TH

PWRGD_HYS

PWRGD_L

WRGD_LK

PG

T

VDET-PWRGD

Active Time Delay

Shutdown Input

Logic High Input V Logic Low Input V

Input Leakage Current SHDN

SHDN

SHDN-HIGH

SHDN-LOW

ILK

AC Performance

Output Delay From SHDN

Output Noise e

Note 1: The minimum V

must meet two conditions: V

IN

T

OR

N

2: VR is the nominal regulator output voltage for the fixed cases. VR = 1.2V, 1.8V, etc. VR is the desired set point output

voltage for the adjustable cases. V

3: TCV

= (V

OUT

temperature range. V

OUT-HIGH

– V

OUT-LOW

R

) *106 / (VR * ΔTemperature). V

OUT-LOW

is the lowest voltage measured over the temperature range.

4: Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is

tested over a load range from 1 mA to the maximum specified output current.

5: Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its

nominal value that was measured with an input voltage of V

6: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction

temperature and the thermal resistance from junction to air. (i.e., T dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained junction temperatures above 150°C can impact device reliability.

7: The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the

desired junction temperature. The test time is small enough such that the rise in the junction temperature over the ambient temperature is not significant.

= V

IN

OUT(MAX)

VR - 2.5% V

+ V

DROPOUT(MAX)

R

±0.5%

Note 1, VR=1.8V for Adjustable Output,

+ 2.5% V Note 2

V

R

— 330 600 mV Note 5, I

V

IN(MIN)

1.0 — 6.0 V TA = +25°C

1.2 — 6.0 T

= -40°C to +125°C

A

For V

%V

89 92 95 V 90 92 94 V

1.0 2.0 3.0 %V

—0.20.4 VI

—1—nAV

OUT

Falling Edge

OUT

PWRGD SINK

ADJ = 0V

PWRGD

— 200 — µs Rising Edge

R

PULLUP

— 200 — µs V

ADJ

20 mV to V

45 %VINVIN = 2.3V to 6.0V

15 %VINVIN = 2.3V to 6.0V

-0.1 ±0.001 +0.1 µA VIN= 6V, SHDN =VIN,

SHDN

100 µs SHDN = GND to VIN

V

OUT

—2.0—µV/√Hz I

OUT

= 10 µF (X7R Ceramic), V

2.5V

= V

≥ 2.3V and V

IN

((R1/R2)+1). Figure 4-1.

ADJ *

≥ V

IN

OUT(MAX)

OUT-HIGH

IN = VOUTMAX

, TJ, θJA). Exceeding the maximum allowable power

A

+ V

DROPOUT(MAX).

is the highest voltage measured over the

+ V

DROPOUT(MAX)

OUT

=2.3V

< 2.3V, I

IN

< 2.5V Fixed, V >= 2.5V Fixed

= VIN = 6.0V

= 10 kΩ

or V

OUT

PWRGD_TH

= GND

= GND to 95% VR

= 200 mA, f = 1 kHz, C

.

= 1.5A,

SINK

= 1.2 mA,

= V

PWRGD_TH

= 100 µA

= Adj.

OUT

+

- 20 mV

OUT

=

MCP1827/MCP1827S

AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise noted, V

I

= 1 mA, CIN = C

OUT

-40°C to +125°C

= 4.7 µF (X7R Ceramic), TA = +25°C. Boldface type applies for junction temperatures, TJ (Note 7) of

OUT

Parameters Sym Min Typ Max Units Conditions

Power Supply Ripple Rejection

PSRR — 60 — dB f = 100 Hz, C

Ratio

Thermal Shutdown Temperature T

Thermal Shutdown Hysteresis

Note 1: The minimum V

must meet two conditions: V

IN

ΔT

SD

2: VR is the nominal regulator output voltage for the fixed cases. VR = 1.2V, 1.8V, etc. VR is the desired set point output

voltage for the adjustable cases. V

3: TCV

= (V

OUT

OUT-HIGH

temperature range. V

– V

OUT-LOW

R

) *106 / (VR * ΔTemperature). V

OUT-LOW

is the lowest voltage measured over the temperature range.

4: Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is

tested over a load range from 1 mA to the maximum specified output current.

5: Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its

nominal value that was measured with an input voltage of V

6: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction

temperature and the thermal resistance from junction to air. (i.e., T dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained junction temperatures above 150°C can impact device reliability.

7: The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the

desired junction temperature. The test time is small enough such that the rise in the junction temperature over the ambient temperature is not significant.

= V

IN

= V

OUT(MAX)

+ V

DROPOUT(MAX)

Note 1, VR=1.8V for Adjustable Output,

— 150 — °C I

—10—°CI

≥ 2.3V and V

IN

((R1/R2)+1). Figure 4-1.

ADJ *

≥ V

IN

OUT(MAX)

OUT-HIGH

IN = VOUTMAX

, TJ, θJA). Exceeding the maximum allowable power

A

+ V

DROPOUT(MAX).

is the highest voltage measured over the

+ V

DROPOUT(MAX)

I

= 10 mA,

OUT

V

= 30 mV pk-pk,

INAC

C

= 0 µF

IN

= 100 µA, V

OUT

V

= 2.8V

IN

= 100 µA, V

OUT

V

= 2.8V

IN

.

OUT

= 10 µF,

= 1.8V,

OUT

= 1.8V,

OUT

TEMPERATURE SPECIFICATIONS

Electrical Specifications: Unless otherwise indicated, all limits apply for V

Parameters Sym Min Typ Max Units Conditions

Temperature Ranges

Operating Junction Temperature Range T Maximum Junction Temperature T Storage Temperature Range T

Thermal Package Resistances

Thermal Resistance, 5LD DDPAK θ Thermal Resistance, 3LD DDPAK θ Thermal Resistance, 5LD TO-220 θ Thermal Resistance, 3LD TO-220 θ

J

A

JA

-40 — +125 °C Steady State — — +150 °C Transient

-65 — +150 °C

— 31.2 — °C/W 4-Layer JC51 Standard Board — 31.4 — °C/W 4-Layer JC51 Standard Board — 29.3 — °C/W 4-Layer JC51 Standard Board — 29.4 — °C/W 4-Layer JC51 Standard Board

= 2.3V to 6.0V.

IN

MCP1827/MCP1827S

90

100

110

120

130

140

150

23456

Input Voltage (V)

Quiescent Current (μA)

130°C

-45

°C

25

°C

90°C

V

OUT

= 1.2V Adj

I

OUT

= 0 mA

100

110

120

130

140

150

160

170

180

190

200

0 250 500 750 1000 1250 1500

Load Current (mA)

Ground Current (µA)

VIN=3.3V

V

OUT

= 1.2V Adj

VIN=5.0V

VIN=2.3V

100

105

110

115

120

125

130

135

140

-45 -20 5 30 55 80 105 130

Temperature (°C)

Quiescent Current (μA)

VIN=5.0V

VIN=2.5V

VIN=4.0V

I

OUT

= 0 mA

V

OUT

= 1.2V Adj

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.1

-45-20 5 305580105130

Temperature (°C)

Line Regulation (%/V)

V

OUT

V

IN

I

OUT

= 1 mA

I

OUT

= 500 mA

I

OUT

= 1000 mA

I

OUT

= 100 mA

-0.15

-0.10

-0.05

0.00

0.05

0.10

0.15

-45-20 5 305580105130

Temperature (°C)

Load Regulation (%)

I

OUT

= 1.0 mA to 1500 mA

V

OUT

= 5.0V

V

OUT

= 3.3V

V

OUT

= 0.8V

V

OUT

= 1.8V

0.408

0.409

0.410

0.411

-45 -20 5 30 55 80 105 130

Temperature (°C)

Adjust Pin Voltage (V)

I

OUT

= 1.0 mA

VIN = 6.0V

VIN = 2.3V

VIN = 5.0V

2.0 TYPICAL PERFORMANCE CURVES

Note: The graphs and tables provided following this note are a statistical summary based on a limited number of

samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

Note: Unless otherwise indicated, V Ceramic (X7R), I

Note: Junction Temperature (T

= 1 mA, Temperature = +25°C, VIN = V

OUT

) is approximated by soaking the device under test to an ambient temperature equal to

J

the desired Junction temperature. The test time is small enough such that the rise in Junction temperature over the Ambient temperature is not significant.

= 1.8V (Adjustable), VIN = 2.8V, C

OUT

+ 0.6V, R

= 4.7 µF Ceramic (X7R), CIN = 4.7 µF

OUT

= 10 kΩ To VIN.

PWRGD

= 2.3V to 6.0V

= 1.2V adj

FIGURE 2-1: Quiescent Current vs. Input Voltage (1.2V Adjustable).

FIGURE 2-2: Ground Current vs. Load Current (1.2V Adjustable).

FIGURE 2-4: Line Regulation vs. Temperature (1.2V Adjustable).

FIGURE 2-5: Load Regulation vs. Temperature (Adjstable Version).

FIGURE 2-3: Quiescent Current vs. Junction Temperature (1.2V Adjustable).

FIGURE 2-6: Adjust Pin Voltage vs. Temperature.

MCP1827/MCP1827S

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0 250 500 750 1000 1250 1500

Load Current (mA)

Dropout Voltage (V)

V

OUT

= 2.5V Adj

V

OUT

= 5.0V Adj

0.30

0.32

0.34

0.36

0.38

0.40

0.42

-45 -20 5 30 55 80 105 130

Temperature (°C)

Dropout Voltage (V)

V

OUT

= 3.3V Adj

V

OUT

= 5.0V Adj

V

OUT

= 2.5V Adj

I

OUT

= 1.5A

300

310

320

330

340

350

360

370

-45 -20 5 30 55 80 105 130 Temperature (°C)

Power Good Time Delay (µs)

V

OUT

= 3.3V Fixed

VIN = 3.9V

VIN = 5.0V

VIN = 4.5V

80

90

100

110

120

130

140

150

23456

Input Voltage (V)

Quiescent Current (μA)

-45°C

+130°C

+85°C

+25°C

V

OUT

= 0.8V

I

OUT

= 0 mA

80

90

100

110

120

130

140

150

33.544.555.56

Input Voltage (V)

Quiescent Current (μA)

V

OUT

= 2.5V

I

OUT

= 0 mA

+130

°C

-45

°C

+25

°C

+90

°C

0.00

50.00

100.00

150.00

200.00

250.00

0 250 500 750 1000 1250 1500

Load Current (mA)

Ground Current (μA)

V

IN

= 2.3V for V

R

VIN = 3.1V for V

R

V

OUT

=0.8V

V

OUT

=2.5V

Note: Unless otherwise indicated, V

Ceramic (X7R), I

= 1 mA, Temperature = +25°C, VIN = V

OUT

= 1.8V (Adjustable), VIN = 2.8V, C

OUT

FIGURE 2-7: Dropout Voltage vs. Load Current (Adjustable Version).

= 4.7 µF Ceramic (X7R), CIN = 4.7 µF

+ 0.6V, R

OUT

= 10 kΩ To VIN.

PWRGD

FIGURE 2-10: Quiescent Current vs. Input Voltage (0.8V Fixed).

FIGURE 2-8: Dropout Voltage vs. Temperature (Adjustable Version).

FIGURE 2-9: Power Good (PWRGD) Time Delay vs. Temperature (Adjustable Version).

FIGURE 2-11: Quiescent Current vs. Input Voltage (2.5V Fixed).

=0.8V =2.5V

MICROCHIP MCP1827, MCP1827S Technical data

1.0 ELECTRICAL CHARACTERISTICS

FIGURE 2-1: Quiescent Current vs. Input Voltage (1.2V Adjustable).

FIGURE 2-2: Ground Current vs. Load Current (1.2V Adjustable).

FIGURE 2-4: Line Regulation vs. Temperature (1.2V Adjustable).

FIGURE 2-5: Load Regulation vs. Temperature (Adjstable Version).

FIGURE 2-3: Quiescent Current vs. Junction Temperature (1.2V Adjustable).

FIGURE 2-6: Adjust Pin Voltage vs. Temperature.

FIGURE 2-7: Dropout Voltage vs. Load Current (Adjustable Version).

FIGURE 2-10: Quiescent Current vs. Input Voltage (0.8V Fixed).

FIGURE 2-8: Dropout Voltage vs. Temperature (Adjustable Version).

FIGURE 2-9: Power Good (PWRGD) Time Delay vs. Temperature (Adjustable Version).

FIGURE 2-11: Quiescent Current vs. Input Voltage (2.5V Fixed).

FIGURE 2-12: Ground Current vs. Load Current.