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387685-05
387685-05 - Brand New Zilog 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
■ DESCRIPTION
The MB3874 and MB3876 are parallel charging DC/DC converter ICs suitable for
down-conversion, which uses pulse width modulation (PWM) for controlling the
output voltage and current independently.
These ICs can dynamically control the secondary battery’s charge current by
detecting a voltage drop in an AC adapter in order to keep its power constant
(dynamically-controlled charging).
The charging method enables quick charging, for example, with the AC adapter
during operation of a notebook PC.
The IC also enable parallel charging, or charging two batteries at the same
time, dramatically reducing the charging time.
With an on-chip output voltage setting resistor which allows the output
voltage to be set at high precision, these ICs are best suited as internal
battery chargers for notebook PCs.
The MB3874 support 3-cell battery and the MB3876 support 4-cell battery.
■ FEATURES
• Detecting a voltage drop in the AC adapter and dynamically controlling the
charge current (Dynamically-controlled charging)
• High efficiency : 93 %(In reverse-current preventive diode)
• Wide range of operating supply voltages : 7 V to 25 V
• Output voltage precision (Built-in output voltage setting resistor ) : ± 0.8
% (Ta = + 25 °C)
• High precision reference voltage source : 4.2 V ± 0.8 %
• Support for frequency setting using an external resistor (Frequency setting
capacitor integrated) :100 kHz to 500 kHz
• Built-in current detector amplifier with wide in-phase input voltage range :
0 V to VCC
• Built-in standby current function : 0 µA (Typ.)
• Built-in soft start function
• Capable of parallel charging (Charging the two battery packs at a time)
• Internal totem-pole output stage supporting P-channel MOS FETs devices
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 |
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