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TS30042 Datasheet Preview

TS30042 Datasheet

High Efficiency 1A/2A Current-Mode Synchronous Buck Converter

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TS30041/42
High E ciency 1A/2A Current-Mode
Synchronous Buck Converter, 1MHz
TRIUNE PRODUCTS
Features
• Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V
with +/- 2% output tolerance
• Adjustable version output voltage range: 0.9V to (VCC -
1V) with +/- 1.5% reference
• Wide input voltage range: 4.5V to 40V (42V Abs Max)
• 1MHz +/- 10% xed switching frequency
• Continuous output current: 1A (TS30041), 2A (TS30042)
• High e ciency up to 95%
• Current mode PWM control with PFM mode for improved
light load e ciency
• Voltage supervisor for VOUT reported at the Power Good
(PG) pin
• Input supply under voltage lockout
• Soft start for controlled startup with no overshoot
• Full protection for over-current, over-temperature, and
VOUT over-voltage
• SYNC function on EN/SYNC pin to control switching fre-
quency
• Less than 10uA in standby mode
• Low external component count
Applications
• On-card switching regulators
• Set-top box, DVD, LCD, LED supply
• Industrial power supplies
Typical Application Circuit
Description
The TS30041 (1A) and TS30042 (2A) are DC/DC synchronous
switching regulators with fully integrated power switches,
internal compensation, and full fault protection. The switching
frequency of 1MHz enables the use of small lter components
resulting in minimal board space and reduced BOM costs.
The TS30041/42 utilizes current mode feedback in normal
regulation PWM mode. When the regulator is placed in
standby (EN is low), the device draws less than 10uA quiescent
current.
The TS30041/42 integrates a wide range of protection circuitry
including input supply under-voltage lockout, output voltage
soft start, current limit, and thermal shutdown.
The TS30041/42 includes supervisory reporting through
the PG (Power Good) open drain output to interface other
components in the system.
Summary Speci cation
• Junction operating temperature -40 °C to 125 °C
• Packaged in a 16pin QFN (3x3)
• ROHS: “Product is lead-free, Halogen Free, RoHS/WEEE
compliant”
TS30041/42
Final Datasheet
July 27, 2016
Rev 2.2
www.semtech.com
1 of 18




Semtech

TS30042 Datasheet Preview

TS30042 Datasheet

High Efficiency 1A/2A Current-Mode Synchronous Buck Converter

No Preview Available !

Pin Con guration
Figure 1: 16 Lead 3x3 QFN, Top View
Pin Description
Pin # Pin Symbol Function
Description
1 VSW
Switching Voltage Node Connected to 4.7uH (typical) inductor
2 VCC
Input Voltage
Input voltage
3 VCC
Input Voltage
Input voltage
4 GND
5 FB
6 NC
GND
Feedback Input
No Connect
Primary ground for the majority of the device except the low-side power FET
Regulator FB Voltage. Connects to VOUT for fixed mode and the output
resistor divider for adjustable mode
Not Connected
7 NC
No Connect
Not Connected
8 PG
Power Good Output
Open-drain output
9
EN/SYNC Enable & Sync Input
Above 2.2V the device is enabled. GND the pin to put device in standby
mode. Includes internal pull-up. Also used for SYNC function
10 BST
Bootstrap Capacitor
Bootstrap capacitor for the high-side FET gate driver. A ceramic capacitor in
the range 15 nF - 200 nF from BST pin to VSW pin
11 VCC
Input Voltage
Input Voltage
12 VSW
Switching Voltage Node Connected to 4.7uH (typical) inductor
13 VSW
Switching Voltage Node Connected to 4.7uH (typical) inductor
14 PGND
Power GND
GND supply for internal low-side FET/integrated diode
15 PGND
Power GND
GND supply for internal low-side FET/integrated diode
16 VSW
Switching Voltage Node Connected to 4.7uH (typical) inductor
17 PAD
Power PAD
Power GND
TS30041/42
Final Datasheet
Rev 2.2
www.semtech.com
2 of 18


Part Number TS30042
Description High Efficiency 1A/2A Current-Mode Synchronous Buck Converter
Maker Semtech
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TS30042 Datasheet PDF






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