LM2698MM-ADJ/NOPB ,SIMPLE SWITCHER? 1.35A Boost Regulator 8-VSSOP -40 to 125features a pin• Set-Top Boxesselectable switching frequency of either 600 kHz or• DSL Modems1.25 MH ..
LM2698MMX-ADJ ,SIMPLE SWITCHER® 1.35A Boost Regulatorfeatures a pin selectableswitching frequency of either 600kHz or 1.25MHz. This pro- n DSL Modemsmot ..
LM26CIM5-HHD , SOT-23, ±3°C Accurate, Factory Preset Thermostat
LM26CIM5-NPA ,SOT-23, ±3°C Accurate, Factory Preset ThermostatPin DescriptionPin Pin Function ConnectionNumber Name+1 HYST Hysteresis control, digital input GND ..
LM26CIM5-PHA ,SOT-23, ±3°C Accurate, Factory Preset ThermostatFeaturesdigital output (OS/OS/US/US), one digital input (HYST) andn Internal comparator with pin pr ..
LM26CIM5-RPA ,SOT-23, ±3°C Accurate, Factory Preset ThermostatFeaturesdigital output (OS/OS/US/US), one digital input (HYST) andn Internal comparator with pin pr ..
LM5642MTC ,High Voltage, Dual Synchronous Buck Converter with Oscillator SynchronizationPin Descriptionsthe system immediately latches off. Connecting this pin toKS1 (Pin 1): The positive ..
LM5642MTCX ,High Voltage, Dual Synchronous Buck Converter with Oscillator SynchronizationFeaturesn Two synchronous buck regulatorsThe LM5642 consists of two current mode synchronousbuck re ..
LM5642MTCX/NOPB ,4.5-36V, Current Mode Dual Synchronous Buck Controller with Oscillator Synchronization 28-TSSOP -40 to 125Connection DiagramKS1 RSNS1 RSNS128 28KS11 1ILIM1 SW1 SW127 ILIM1 272 2COMP1 HDRV1 HDRV126 COMP1 26 ..
LM5642XMH , LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization
LM5642XMH/NOPB ,High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization 28-HTSSOP -40 to 125Connection DiagramKS1 RSNS1 RSNS128 28KS11 1ILIM1 SW1 SW127 ILIM1 272 2COMP1 HDRV1 HDRV126 COMP1 26 ..
LM5642XMHX , LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization
LM2698MM-ADJ/NOPB
SIMPLE SWITCHER? 1.35A Boost Regulator 8-VSSOP -40 to 125
Battery or
Power Source
4.5V-5.5V
10PH D
CIN
22PF, 10V
COUT
10PF
3.48k
RFB1
30.1k
4.7 nF
12V
400mA
24.9k 4
FSLCT
GNDVC
SHDN
VIN
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LM2698SNVS153F –MAY 2001–REVISED SEPTEMBER 2016
LM2698 SIMPLE SWITCHER® 1.35-A Boost Regulator Features 1.9-A, 0.2-Ω Internal Switch (Typical) Operating Voltageas Lowas 2.2V 600 kHzto 1.25 MHz Adjustable Frequency
Operation Switchers Made Simple® Software 8-Pin VSSOP Package
Applications 3.3Vto5V and5Vto12V Conversion Distributed Power Set-Top Boxes DSL Modems Diagnostic Medical Instrumentation Boost Converters Flyback Converters SEPIC Converters
DescriptionThe LM2698 deviceisa general purpose PWM boost
converter. The 1.9-A, 18-V, 0.2-Ω internal switch
enables the LM2698 to provide efficient power
conversionto outputs ranging from 2.2Vto 17V.It
can operate with input voltagesas low as 2.2V and highas 12V. Current-mode architecture provides
superior line and load regulation and simple
frequency compensation over the device's 2.2VtoV input voltage range. The LM2698 sets the
standardin power density andis capableof supplyingVat 400 mA froma 5-V input. The LM2698 can
alsobe usedin flybackor SEPIC topologies.
The LM2698 SIMPLE SWITCHER® featuresa pin
selectable switching frequencyof either 600 kHzor
1.25 MHz. This promotes flexibility in component
selection and filtering techniques.A shutdown pinis
availableto suspend the device and decrease the
quiescent currentto5 µA. An external compensation
pin gives the user flexibility in setting frequency
compensation, which makes possible the use of
small, low-ESR ceramic capacitors at the output.
Switchers Made Simple® softwareis available to
ensurea quick, easy, and assured design. The
LM2698is availableina low-profile, 8-pin VSSOP
(DGK) package.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application Circuit
