TEA1211HN Philips Semiconductors, TEA1211HN Datasheet - Page 3

• Manufacturer Part Number: TEA1211HN
• Description: High efficiency auto-up/down DC/DC converter
• Manufacturer: Philips Semiconductors

Philips Semiconductors
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2
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2003 Oct 13
TEA1211HN
I
1.5 V to 5.5 V
Single inductor topology
High efficiency up to 94 % over wide load range
Wide input range; functional from 2.55 V up to 5.5 V
1.7 A maximum input and output current
Low quiescent power consumption
600 kHz switching frequency
Four integrated very low R
Synchronizable to external clock
Externally adjustable current limit for protection and
efficient battery use in case of dynamic loads
Under voltage lockout
PWM-only option
Shut-down current less than 1 A
32-pin small body HVQFN package.
Stable output voltage from Lithium-Ion batteries
Variable voltage source for PAs (Power Amplifiers) in
cellular phones
Wireless handsets
Hand-held instruments
Portable computers.
High efficiency auto-up/down
DC/DC converter
2
NUMBER
C-bus programmable output voltage range of
FEATURES
APPLICATIONS
ORDERING INFORMATION
TYPE
HVQFN32
NAME
DS(on)
plastic thermal enhanced very thin quad flat package; no leads;
32 terminals; body 5
power MOSFETs
5
3
DESCRIPTION
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The TEA1211HN is a fully integrated auto-up/down
DC/DC converter circuit with I
compact and dynamic power conversion is achieved using
a digitally controlled pulse width and frequency modulation
like control concept, four integrated low R
switches with low parasitic capacitances and fully
synchronous rectification.
The combination of auto-up/down DC/DC conversion, high
efficiency and low switching noise makes the TEA1211HN
well suited to supply a power amplifier in a cellular phone.
The output voltage can be I
exact voltage needed to achieve a certain output power
level with optimal system efficiency, thus enlarging battery
lifetime.
The TEA1211HN operates at 600 kHz switching frequency
which enables the use of small size external components.
The switching frequency can be locked to an external high
frequency clock. Deadlock is prevented by an on-chip
under voltage lockout circuit. An adjustable current limit
enables efficient battery use even at high dynamic loads.
Optionally, the device can be kept in pulse width
modulation mode regardless of the load applied.
0.85 mm
PACKAGE
GENERAL DESCRIPTION
2
C-bus programmed to the
2
C-bus interface. Efficient,
Preliminary specification
TEA1211HN
DS(on)
SOT617-3
VERSION
power