TS33010
Final
Rev
June 2
,
2016
1of
GND
TS33010
PGND
T
S33010
High Efficiency Synchronous 500mA
DC/DC Buck Converter, 2 . 2
5Mhz
TRIUNE
PR
ODUCTS
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 200nA in shutdown mode
• Multiple enable pins for flexible system sequencing
• Low external component count
• Junction operating temperature -40°C to 125°C
• Packaged in a 16 pin QFN (3x3)
• Product is lead-free, Halogen Free, RoHS / WEEE
compliant
Applications
•
Point of load
• Systems with deep submicron ASICs/FPGAs
• Set-top box
• Communications equipment
• Portable and handheld equipment
Description
The TS33010 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 TS33010 utilizes PWM voltage mode feedback with input
voltage feed-forward to provide a wide input voltage range
without the need for external compensation.
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 and PWM modes 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.
The TS33010 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.
Typical
Applications
VCC
VCC
Fixed
Output
VSW
1.5μH
VOUT
22μF
VOUT
Sense
10μF
FB
VCC or VOUT
nLP
nLP
10
kohm
(optional)
EN
EN
PG
PG
