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TEA1733T; TEA1733LT
Datasheet
(Objective)
26-Oct-09, 17 pages, 103 kB
General description
The TEA1733(L) is a low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. The TEA1733(L) operates in fixed frequency mode. To reduce ElectroMagnetic Interference (EMI), frequency jitter has been implemented. For Continuous Conduction Mode (CCM) operation, slope compensation is integrated.
The TEA1733(L) IC features an OverPower Protection (OPP). The controller can be set to accept an overpower situation for a limited amount of time.
Two pins are reserved for protection purposes. Input UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and OverTemperature Protection (OTP) can be implemented with a minimal number of external components.
At low power levels the primary peak current is set to 25 pct of the maximum peak current and the switching frequency is reduced to limit the switching losses. The combination of fixed frequency operation at high output power and frequency reduction at low output power provides high efficiency over the total load range.
The TEA1733(L) enables low cost, highly efficient and reliable supplies for power requirements up to 75 W to be designed easily and with a minimum number of external components.
Features
- SMPS controller IC enabling low cost applications
- Large input voltage range (12 V to 30 V)
- Very low supply current during start-up and restart (typically 10 uA)
- Low supply current during normal operation (typically 0.5 mA without load)
- Overpower or high/low line compensation
- Adjustable overpower time-out
- Adjustable overpower restart timer
- Fixed switching frequency with frequency jitter to reduce EMI
- Frequency reduction with fixed minimum peak current at low power operation to maintain high efficiency at low output power levels
- Slope compensation for CCM operation
- Low and adjustable OverCurrent Protection (OCP) trip level
- Adjustable soft start
- Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP)
- IC overtemperature protection
- The devices can be used in all applications that require an efficient and cost-effective power supply solution of up to 75 W.
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| TEA1733LT/N1 | TEA1733LT/N1,118 | 9352 897 79118 | Samples available | SOT96-1
(SO8) | Tape reel smd | Standard Marking | |
| TEA1733T/N1 | TEA1733T/N1,118 | 9352 897 82118 | Samples available | SOT96-1
(SO8) | Tape reel smd | Standard Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| TEA1733LT/N1 | TEA1733LT/N1,118 | Not available |
| Always Pb-free | ||||
| TEA1733T/N1 | TEA1733T/N1,118 | TEA1733T_N1 |
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| TEA1733LT/N1 | 9352 897 79118 | TEA1733LT/N1,118 | not available | |||||||
| TEA1733T/N1 | 9352 897 82118 | TEA1733T/N1,118 | not available |
Applications
- The devices can be used in all applications that require an efficient and cost-effective power supply solution of up to 75 W.
