TOLL Microelectronic TMI8037
the TMI8037 is a monolithic voltage regulator and interface IC, packaged in ESOP8, specifically designed to provide the 14V/19V power supply with high efficiency and the 22kHz TONE signaling to the LNB downconverter in the antenna dish or to the multi-switch box. The device makes the total LNB supply design simple, efficient and compact with low external component count. The external modulation input (TONE pin) can accept a tome modulated DiSEqC command and transfer it symmetrically to the output to meet DiSEqC 1.x protocol.| Part No. | TMI8037 |
|---|---|
| Datasheet | TMI8037 Download |
| Manufacturer |  TOLL Microelectronic |
| Description | 500mA LNB-Power Supply & Control Voltage Regulator |
| Buy | Stock & Price |
FEATURES
● High Efficiency: Up to 90%● Low noise output to avoid sensitivity of Can Tuner and DISH’s LNA dropping down
● Noise 40mV@20MHz BWL
● Single chip solution on 650mVpp
● 22kHz TONE with 10µs Trise/Tfall for less Transferring noise
● LNB Voltages (2 levels: 14V and 19V) compatible with common standards, Push-pull output stage minimizes 14V → 19V and 19V → 14V output transition times
● External 22kHz TONE input
● Integrated DC/DC BOOST converter and high efficiency (typ. 87%) with integrated Power MOSFET
● 1.0MHz Switch Frequency BOOST
● Integrated low Noise Linear Regulator
● 5.0V, 3.3V, 2.5V, 1.8V, logic compatible
● Internal Short, OCP, OTP protection
● ESOP8 package
APPLICATIONS
● LNB Power supply for DVB-S/S2/ABS● Digital STB
● Satellite TV cards
GENERAL DESCRIPTION
Intended for analog and digital satellite receivers/sat-TV, sat-OC cards, TMI8037 consists of a BOOST converter and a low-noise linear regulator along with the circuitry required for TONE injection and pin controllable interface.
