ILC6377 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > ILC6377

Preview

ILC6377: Description0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown; File Size107KB，12 Pages; ManufacturerFairchild; Websitehttp://www.fairchildsemi.com/

Download Datasheet Compare View All

ILC6377 Overview

0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown

Preview

Download Datasheet

View All

www.fairchildsemi.com

ILC6376/77

0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with

Shutdown

Features

•

±2.5% accurate output voltages

Guaranteed 500mA output current

95% efficiency

55µA no load battery input current (ILC6377)

1.5µA shutdown current

Built in short circuit and overcurrent protection

Undervoltage lockout and soft-start

External transistor drive available for higher I

OUT

300kHz operation

Automatic switchover to PFM mode at low currents for

longest battery life (ILC6377)

• Fixed 3.3V or 5V or adjustable output

• SO-8 package

Description

he ILC6376/77 is a 95% efficient, 300kHz step-down DC-

DC converter in an SO-8 package; capable of delivering

500mA output current. The device is also capable of driving

an external FET for higher output current applications.

The ILC6376/77 uses a unique p-channel architecture with

built-in charge pump to maintain low on-resistance, even at

low input voltages. The ILC6376 operates in PWM mode

with 300kHz switching frequency. The ILC6377 does the

same at high and medium load currents. When the load

current drops and the device hits approximately 25% duty

cycle, ILC6377 automatically switches over to PFM or pulse

skipping mode. PFM (pulse frequency modulation) mode of

operation extends efficiency at light loads.

Start-up is controlled via an external soft-start capacitor. The

device will automatically re-enter start-up mode when an

output current overload condition is sensed; thus providing

automatic short-circuit protection. Voltage lockout prevents

faulty operation below the minimum operating voltage level.

In shutdown, the ILC6376/77 consumes only 1.5µA current.

The ILC6376/77SOXX offers fixed 3.3V or 5V output while

ILC6376/77SOADJ allows adjustable output. Both versions

of ILC6376/77 are available in an SO-8 surface mount

package.

Applications

•

Cellular Phones

Palmtops and PDAs

Portable Instrumentation

Buck Converter for Industrial / Networking Applications

Typical Applications

SD1

S/D

10µF

ILC6376/77

(TOP VIEW)

22µH

OUT

47µF

Fig 1. Typical step-down DC-DC

converter application

SD1: SS12 Schottky Diode (FAIRCHILD)

: 10V/47µF Tantalum Capacitor (NICHICON, F93)

: 4700pF Ceramic Capacitor

: 16V / 10µF Tantalum Capacitor (NICHICON, F93)

Rev. 1.5 November 2001

ILC6377 Related Products

	ILC6377	ILC6376	ILC6376SO33	ILC6376SO50	ILC6376ADJ	ILC6377SO33	ILC6377SOADJ	ILC6377SO50
Description	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown	0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown
Is it Rohs certified?	-	-	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible
Maker	-	-	Fairchild	Fairchild	Fairchild	Fairchild	Fairchild	Fairchild
Parts packaging code	-	-	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC
package instruction	-	-	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25
Contacts	-	-	8	8	8	8	8	8
Reach Compliance Code	-	-	compliant	compliant	compliant	compli	compli	compli
ECCN code	-	-	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Other features	-	-	CAN ALSO FUNCTION IN PFM MODE	CAN ALSO FUNCTION IN PFM MODE	CAN ALSO FUNCTION IN PFM MODE	PFM CONTROL TECHNIQUE IS ALSO POSSIBLE	PFM CONTROL TECHNIQUE IS ALSO POSSIBLE	PFM CONTROL TECHNIQUE IS ALSO POSSIBLE
Analog Integrated Circuits - Other Types	-	-	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	-	-	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE
Control Technology	-	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Nominal input voltage	-	-	4 V	6 V	6 V	4 V	6 V	6 V
JESD-30 code	-	-	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
JESD-609 code	-	-	e0	e0	e0	e0	e0	e0
length	-	-	4.9 mm	4.9 mm	4.9 mm	4.9 mm	4.9 mm	4.9 mm
Number of functions	-	-	1	1	1	1	1	1
Number of terminals	-	-	8	8	8	8	8	8
Maximum operating temperature	-	-	80 °C	80 °C	80 °C	80 °C	80 °C	80 °C
Minimum operating temperature	-	-	-30 °C	-30 °C	-30 °C	-30 °C	-30 °C	-30 °C
Maximum output current	-	-	0.7 A	0.7 A	0.7 A	0.7 A	0.7 A	0.7 A
Package body material	-	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	-	SOP	SOP	SOP	SOP	SOP	SOP
Encapsulate equivalent code	-	-	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25
Package shape	-	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	-	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Certification status	-	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	-	-	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm
surface mount	-	-	YES	YES	YES	YES	YES	YES
Switch configuration	-	-	BUCK	BUCK	BUCK	BUCK	BUCK	BUCK
Maximum switching frequency	-	-	345 kHz	345 kHz	345 kHz	345 kHz	345 kHz	345 kHz
Temperature level	-	-	COMMERCIAL EXTENDED	COMMERCIAL EXTENDED	COMMERCIAL EXTENDED	COMMERCIAL EXTENDED	COMMERCIAL EXTENDED	COMMERCIAL EXTENDED
Terminal surface	-	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	-	-	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	-	-	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm
Terminal location	-	-	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
width	-	-	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm

Recommended Resources

Infrared transmitter circuit composed of 555 time base circuit

Motor speed control circuit

OM390 type circuit

LM389 single chip intercom A

Positive and negative 10V reference voltage circuit

Clever use of LM386 as a small power positive and negative voltage stabilized power supply circuit diagram

Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components