TS33000 Datasheet, PDF (1/17 Pages) List of Unclassifed Manufacturers – High Efficiency Synchronous DC/DC Buck Converter

TS33000
High Efficiency Synchronous
DC/DC Buck Converter
TRIUNE PRODUCTS
Features
• Fixed Output option has automatic low power PFM mode
for reduced quiescent current at light loads
• 2.25MHz +/- 10% fixed switching frequency
• Fixed output voltages: 0.8V, 0.9V, 1.2V, 1.5V, 1.8V,
• 2.5V, and 3.3V with +/- 2% output tolerance
• Input voltage range: 2.0V to 5.5V
• Voltage mode PWM control with input voltage feed-
• forward compensation
• Voltage supervisor for VOUT reported at the PG pin
• Input supply under voltage lockout
• Soft start for controlled startup with no overshoot
• Full protection for over-current, over-temperature,
• and VOUT overvoltage
• Less than 100nA in shutdown mode
• Multiple enable pins for flexible system sequencing
• Low external component count
• Junction operating temperature -40C to 125C
• Packaged in a 16 pin QFN (3x3)
Applications
• Point of load
• Systems with deep submicron ASICs/FPGAs
• Set-top box
• Communications equipment
• Portable and handheld equipment
Description
The TS33000 is a DC/DC synchronous switching regulator
with fully integrated power switches, internal compensation,
and full fault protection. The switching frequency of 2.25MHz
enables the use of extremely small filter components, resulting
in smaller board space and reduced BOM costs.
When the input current is greater than approximately 50mA,
the TS33000 utilizes PWM voltage mode feedback with input
voltage feed-forward to provide a wide input voltage range
without the need for external compensation.
For the Fixed Output option, when the input current is less
than 50mA, the device uses a PFM mode to provide increased
efficiency at light loads. The cross over between PFM mode
and PWM is automatic and has hysteresis to prevent oscillation
between the modes. Additionally, the nLP mode pin can be
used to force the device into PWM mode to reduce the output
ripple, if needed (Fixed Output only).
The TS33000 integrates a wide range of protection circuitry;
including input supply under-voltage lockout, output under-
voltage, output over-voltage, soft start, high side FET and low
side FET current limits, and thermal shutdown.
Typical Applications
VCC
nLP
EN
Fixed Output
VCC
2x4.7uF
VSW
VOUT
Sense
FB
nLP
EN
PG
1.5uH
VOUT
4.7uF
VCC or VOUT
10 kohm
(optional)
PG
TS33000
Final Datasheet
May 1, 2015
Rev 1.9
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