⚠ All product names, trademarks, brands, and logos on this site are the property of their respective owners. Their use is for identification purposes only and does not imply any affiliation or authorization from the rights holders. We are not authorized dealers or distributors of the brand. The warranty is provided by us, not the original manufacturer.
R1234D001D-TR-F
R1234D001D-TR-F - Brand New RICOH IC Chips
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
OUTLINE
The R1234D Series are CMOS-based PWM step-down DC/DC Converters with
synchronous rectifier, low supply current.
Each of these ICs consists of an oscillator, a PWM control circuit, a
reference voltage unit, an error amplifier, a soft-start circuit, protection
circuits, a protection against miss operation under low voltage (UVLO),
PWM/VFM alternative circuit, a chip enable circuit, and a driver transistor. A
low ripple, high efficiency step-down DC/DC converter can be easily composed
of this IC with only a few kinds of external components, or an inductor and
capacitors. (As for R1234D001C/D types, divider resistors are also necessary.)
In terms of Output Voltage, it is fixed internally in the R1234Dxx1A/B types.
While in the R1234D001C/D types, Output Voltage is adjustable with external
divider resistors.
FEATURES
• Supply Current ..................................................Typ. 230µA
(R1234Dxx1A/C)
Typ. 250µA (R1234Dxx1B/D)
• Standby Current ................................................Typ. 0µA
• Input Voltage Range ........................................ 2.4V to 5.5V
(ABSOLUTE MAXIMUM : 6.5V)
• Output Voltage Range.......................................2.2V to 3.3V
(R1234Dxx1A/B)
0.8V to VIN (R1234Dxx1C/D)
• Output Voltage Accuracy...................................±2.0%
(R1234DxxA/B)
• Oscillator Frequency.........................................Typ. 500kHz
(R1234Dxx1A/C)
Typ. 800kHz (R1234Dxx1B/D)
• Built-in Driver ON Resistance ...........................Pch 0.4Ω ,Nch 0.6Ω
(VIN=3V)
• Control mode switch .........................................MODE pin=”L”:
PWN
MODE pin=”H”: VFM
• Efficiency...........................................................Typ.
90%
• Package ............................................................SON-8
• Built-in Soft-start Function.................................Typ. 1.5ms
• Latch-type Protection Function .........................Typ. 1.5ms
• Built-in Current Limit Circuit
APPLICATIONS
• Power source for portable equipment.
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
Recensioni reali di acquirenti su componenti elettronici.
In Stock 19-22/R6G6C-A01/2T
19-22/R6G6C-A01/2T - Brand New EVERLIGHT IC Chips
In Stock 216T9NGBGA13FH
216T9NGBGA13FH - Brand New ATI IC Chips
In Stock 26.000000MHZ
26.000000MHZ - Brand New TXC IC Chips
In Stock 2N3819
2N3819 - Brand New NTE Electronics IC Chips
In Stock 2SA1460
2SA1460 - Brand New NEC IC Chips
In Stock 2SC1945
2SC1945 - Brand New MITSUBISHI IC Chips
In Stock 2SC3733-K
2SC3733-K - Brand New NEC IC Chips
In Stock 2SJ179
2SJ179 - Brand New STMicroelectronics IC Chips
In Stock 2SK170-BL
2SK170-BL - Brand New TOSHIBA IC Chips
In Stock 2SK2647-01MR
2SK2647-01MR - Brand New FUJITSU IC Chips
