Key facts
- Brand
- Maxim
- Model
- MAX1999
- Documents
- 10
- Languages
- EN
- Last added
- 2012-05-08
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Maxim MAX1777/MAX1977/MAX1999 Dual Step-Down Switch-Mode Power Supply Controller Datasheet
The MAX1777, MAX1977, and MAX1999 are dual step‑down, switch‑mode power‑supply controllers that generate logic‑supply voltages for battery‑powered systems. Each device includes two PWM controllers, adjustable or fixed 5 V and 3.3 V outputs, and always‑on linear regulators capable of 100 mA output current.
Key features include Maxim’s Quick‑PWM response without sense resistors, ultrasonic pulse‑skipping for low‑noise audio applications, selectable switching frequencies (200 kHz/5 V, 300 kHz/3.3 V for MAX1777; 400 kHz/5 V, 500 kHz/3.3 V for MAX1977), power‑good signaling, over‑voltage protection, and operation over –40 °C to +85 °C in a 28‑pin QSOP package.
Maxim MAX1999 specifications
| Operating Temperature Range | -40 °C to +85 °C |
|---|---|
| Always‑On Linear Regulator Output Current | Up to 100 mA |
| Switching Frequency (MAX1777) | 200 kHz @ 5 V, 300 kHz @ 3.3 V |
| Switching Frequency (MAX1977) | 400 kHz @ 5 V, 500 kHz @ 3.3 V |
| Package | 28‑pin QSOP |
Source: Maxim MAX1777/MAX1977/MAX1999 Dual Step-Down Switch-Mode Power Supply Controller Datasheet
All Maxim MAX1999 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- Maxim MAX1777/MAX1977/MAX1999 Dual Step-Down Switch-Mode Power Supply Controller Datasheet 32 p
- Maxim MAX19996 SiGe High-Linearity 2000MHz‑3000MHz Downconversion Mixer with LO Buffer Datasheet 19 p
- Maxim MAX19995 Dual-Channel Downconverter Data Sheet 29 p
- Maxim MAX19997A Dual SiGe High-Linearity Downconversion Mixer Datasheet 35 p
- Maxim MAX19999 Dual-Channel Downconverter Datasheet 19 p
- Maxim MAX19996A Downconversion Mixer Data Sheet 35 p
- Maxim MAX19995A Dual-Channel Downconverter Datasheet 23 p
- Maxim MAX19998 Datasheet 28 p
- Maxim MAX19994A Dual-Channel Downconversion Mixer Datasheet 28 p
- Maxim MAX19993 Downconversion Mixer Datasheet 23 p
Questions answered in these manuals
What is the operating temperature range of the MAX1777/MAX1977/MAX1999 controllers?
They operate from –40 °C to +85 °C.
From: Maxim MAX1777/MAX1977/MAX1999 Dual Step-Down Switch-Mode Power Supply Controller Datasheet
How much output current can the always‑on linear regulators provide?
Each linear regulator can supply up to 100 mA.
From: Maxim MAX1777/MAX1977/MAX1999 Dual Step-Down Switch-Mode Power Supply Controller Datasheet
What RF frequency range does the MAX19996 cover?
The MAX19996 operates from 2000 MHz to 3000 MHz RF.
From: Maxim MAX19996 SiGe High-Linearity 2000MHz‑3000MHz Downconversion Mixer with LO Buffer Datasheet
What is the typical conversion gain of the MAX19996?
Typical conversion gain is 8.7 dB.
From: Maxim MAX19996 SiGe High-Linearity 2000MHz‑3000MHz Downconversion Mixer with LO Buffer Datasheet
What is the typical conversion gain of the MAX19995?
The typical conversion gain is 9 dB.
What supply voltage range does the MAX19995 support?
It can be powered from 3.3 V up to 5.0 V.