Product Information

RT8259GJ6

RT8259GJ6 electronic component of Richtek

Datasheet
DC-DC Converters TSOT-23-6 RoHS
Manufacturer: Richtek
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)

5: USD 0.3904 ea
Line Total: USD 1.95

1372 - Global Stock
Ships to you between
Fri. 31 May to Wed. 05 Jun
MOQ: 5  Multiples: 5
Pack Size: 5

 More Buying Options & Price Grid(s)

Availability Price Quantity
13987 - WHS 1


Ships to you between
Fri. 31 May to Wed. 05 Jun

MOQ : 5
Multiples : 5

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RT8259GJ6
Richtek

5 : USD 0.3227
50 : USD 0.269
150 : USD 0.2461
500 : USD 0.2175
3000 : USD 0.18
6000 : USD 0.1724

Read More Specifications

     
Manufacturer
Product Category
RoHS - XON
Icon ROHS
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Additional Infomation About Product

RT8259 1.2A, 24V, 1.4MHz Step-Down Converter General Description Features zz z zz Wide Operating Input Voltage Range : 4.5V to 24V The RT8259 is a high voltage buck converter that can support zz z zz Adjustable Output Voltage Range : 0.8V to 15V the input voltage range from 4.5V to 24V and the output zz z zz 1.2A Output Current current can be up to 1.2A. Current Mode operation provides zz z zz 0.3 Internal Power MOSFET Switch fast transient response and eases loop stabilization. zz z zz High Efficiency up to 92% The chip also provides protection functions such as cycle- zz z zz 1.4MHz Fixed Switching Frequency by-cycle current limiting and thermal shutdown protection. zz z zz Stable with Low ESR Output Ceramic Capacitors The RT8259 is available in a SOT-23-6 and TSOT-23-6 zz z zz Thermal Shutdown packages. zz z zz Cycle-By-Cycle Over Current Protection zz z zz RoHS Compliant and Halogen Free Ordering Information RT8259 Applications Package Type z Distributed Power Systems E : SOT-23-6 z Battery Charger J6 : TSOT-23-6 z Pre-Regulator for Linear Regulators Lead Plating System z WLED Drivers G : Green (Halogen Free and Pb Free) Note : Pin Configurations Richtek products are : (TOP VIEW) RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. PHASE VIN EN Suitable for use in SnPb or Pb-free soldering processes. 6 5 4 23 Marking Information BOOT GND FB For marking information, contact our sales representative SOT-23-6/TSOT-23-6 directly or through a Richtek distributor located in your area. Typical Application Circuit V IN 4.5V to 24V V 5 1 OUT VIN BOOT 3.3V C1 L1 CB RT8259 10F 4.7H 10nF 6 PHASE D1 R1 Chip Enable B230A 4 62k EN 3 C2 FB 22F Open = GND R2 Automatic Startup 2 19.6k DS8259-03 March 2011 www.richtek.com 1RT8259 Table 1. Recommended Component Selection, C2 = 22F V (V) 1.2 1.8 2.5 3.3 5 8 10 15 OUT L1 ( H) 2 2 3.6 4.7 6.8 10 10 15 R1 (k ) 62 62 62 62 62 68 68 68 R2 (k ) 124 49.9 29.4 19.6 12 7.5 5.9 3.9 Functional Pin Description Pin No. Pin Name Pin Function Bootstrap. A capacitor is connected between PHASE and BOOT pins to form a floating 1 BOOT supply across the power switch driver. This capacitor is needed to drive the power switchs gate above the supply voltage. Ground. This pin is the voltage reference for the regulated output voltage. For this reason, 2 GND care must be taken in its layout. This node should be placed outside of the D1 to C1 ground path to prevent switching current spikes from inducing voltage noise into the part. Feedback. An external resistor divider from the output to GND tapped to the FB pin sets the 3 FB output voltage. The value of the divider resistors also set loop bandwidth. 4 EN Chip Enable (Active High). If the EN pin is open, it will be pulled to high by internal circuit. Supply Voltage. Bypass VIN to GND with a suitable large capacitor to prevent large voltage 5 VIN spikes from appearing at the input. 6 PHASE Switch Output. Function Block Diagram VIN - X20 1A + Current Sense Amp 25m Ramp Regulator Generator BOOT - 1.1V 10k Oscillator + EN 1.4MHz Shutdown S Reference 3V Comparator Q Driver + + R EA - PHASE FB - PWM Comparator 30pF Bootstrap 400k Control OC Limit Clamp GND 1pF www.richtek.com DS8259-03 March 2011 2

HS Compliance

Tariff Desc

8504.40.90 POWER SUPPLIES, having BOTH:
(a) input voltages of 176V-246VAC, 47Hz-63Hz single phase OR 200V-230VAC, 50Hz-60Hz single phase
(b) multiple DC output voltages from minus 200 V to positive 200V
TC 9603032

8504.40.90 CHARGERS, ADAPTERS AND INVERTERS, AC/DC OR DC/DC OR DC/AC having ALL of the following:
(a) input voltage NOT less than 10V and NOT greater than 252V
(b) output voltage NOT less than 2V and NOT greater than 252V
(c) wattage NOT less than 40 W and NOT greater than 160W
(d) output current NOT greater than 17A - TC 1021920

8504.50.10 81
(a) designed for use with equipment of 8471
(b) for telecommunication apparatus of 8517 Free

8504.40.90 POWER SUPPLY UNITS, DC AND/OR AC output, complying with AS/NZS 60950 & AS/NZS CISPR 22, having ALL of:
(a) voltage NOT less than 2.5 V and NOT greater than 55V
(b) wattage NOT less than 0.02 W and NOT greater than 105W
(c) current output NOT less than 0.01 amp and NOT greater than 2.5amp
TC 1014564

8504.40.90 POWER SUPPLY MODULES having ALL of the following:
(a) input power at EITHER of the following voltages:
(i) 120VAC/240VAC
(ii) 24VDC /48VDC
(b) output power at EITHER of the following voltages:
(i) 5VDC, +15VDC, -15VDC, and 24VDC field I/O
(ii) 24VDC field I/O only
(c) circuitry monitors
(d) output adjusters
TC 9810001

8504.40.90 POWER SUPPLIES DC having BOTH:
(a) variable voltage NOT exceeding 30V
(b) maximum current output NOT exceeding 25amps
TC 9900597

8504.40.90 CONVERTERS, DC/DC, power output not exceeding 5W, being ANY of:
(a) single in line package
(b) dual in line
(c) surface mount device
TC 9601650

8543.90.20 20 Electronic microassemblies Free

8504.40.30 Static converters
(a) separately housed units, designed to be housed in the same cabinet as the central processing unit of equipment of 8471
(b) for telecommunication apparatus of 8517
60 No Electric current rectifying assemblies Free
63 No Other Free

Richtek may also be referenced as

RCT
Richtek Tech
Richtek Technology
Richtek USA Inc
Richtek USA Inc.

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