NCP1256: Low Power Offline PWM Current Mode Controller with Brown-Out Protection
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The NCP1256 includes everything to build cost-effective switch mode power supplies ranging from a few watts up to several tens of watts. Housed in a tiny TSOP-6 package, the part can be supplied up to 30 V. It hosts a jittered 65 or 100-kHz switching circuitry operated in peak current mode control. When the power in the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current.
NCP1256 comes with several protection features such as a timer-based auto-recovery short circuit protection, lossless OPP, and an easily adjustable Brown Out (BO) pin. Two inputs are provided to latch off the part in a practical way, for instance with OVP and OTP events. Several options exists to chose latch or auto-recovery.
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Applications | End Products | |
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Technical Documentation & Design Resources
Application Notes (3) | Videos (1) |
Data Sheets (1) | Evaluation Board Documents (4) |
Package Drawings (1) |
Evaluation/Development Tool Information
Product | Status | Compliance | Short Description | Action | |
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NCP1256B60WGEVB | Active |
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60W, 19V Power Supply Evaluation Board |
Availability & Samples
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Specifications
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Case Outline |
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NCP1256ASN100T1G | Active |
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NCP1256 | TSOP-6 | 318G-02 | 3 | 260 | Tape and Reel | 3000 | $0.2133
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NCP1256ASN65T1G | Active |
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NCP1256 | TSOP-6 | 318G-02 | 3 | 260 | Tape and Reel | 3000 | $0.2133 | ||||||||
NCP1256BSN100T1G | Active |
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NCP1256 | TSOP-6 | 318G-02 | 3 | 260 | Tape and Reel | 3000 | $0.2133 | ||||||||
NCP1256BSN65T1G | Active |
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NCP1256 | TSOP-6 | 318G-02 | 3 | 260 | Tape and Reel | 3000 | $0.2133 | ||||||||
NCP1256ESN65T1G | Active |
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NCP1256 | TSOP-6 | 318G-02 | 3 | 260 | Tape and Reel | 3000 | $0.2133
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Market Leadtime (weeks) | : | 4 to 8 |
ON Semiconductor (2020-09-02 00:00) | : | 12,000 |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | 4 to 8 |
ON Semiconductor (2020-09-02 00:00) | : | 21,000 |
Market Leadtime (weeks) | : | 4 to 8 |
ON Semiconductor (2020-09-02 00:00) | : | 15,000 |
Market Leadtime (weeks) | : | 4 to 8 |
Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
fsw Typ (kHz)
Stand-by Mode
UVLO (V)
Short Circuit Protection
Latch
Soft Start
VCC Max (V)
Drive Cap. (mA)
Package Type
NCP1256ASN100T1G
$0.2133
Pb
A
H
P
Active
Flyback
Current Mode
100
Yes
8.3
Yes
Yes
Yes
35
500 / 500
TSOP-6
NCP1256ASN65T1G
$0.2133
Pb
A
H
P
Active
Flyback
Current Mode
65
Yes
8.3
Yes
Yes
Yes
35
500 / 500
TSOP-6
NCP1256BSN100T1G
$0.2133
Pb
A
H
P
Active
Flyback
Current Mode
100
Yes
8.3
Yes
No
Yes
35
500 / 500
TSOP-6
NCP1256BSN65T1G
$0.2133
Pb
A
H
P
Active
Flyback
Current Mode
65
Yes
8.3
Yes
No
Yes
35
500 / 500
TSOP-6
NCP1256ESN65T1G
$0.2133
Pb
A
H
P
Active
Flyback
Current Mode
65
Yes
8.3
Yes
Yes
Yes
35
500 / 500
TSOP-6
Case Outlines
318G-02
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