TS3310 Datasheet, PDF (1/20 Pages) Touchstone Semiconductor Inc – A True 150-nA IQ, 0.9-3.6VIN, Selectable 1.8-5VOUT Instant-OnTM Boost Converter

TS3310
A True 150-nA I_Q, 0.9-5V_IN, Selectable 1.8-5V_OUT Instant-On^TM Boost Converter
FEATURES
 Ultra-Efficient Boost Converter:
Active Mode, No-load Supply Current: 150nA
Efficiency: Up to 92%
Input Voltage Range: 0.9V-5V
Delivers up to 35mA at 3VSTORE from 1.2VIN
Single-inductor, Discontinuous Conduction
Mode Operation
No External Schottky Diode Required
 Pin-Selectable Output Voltages:
1.8V, 2.1V, 2.5V, 2.85V, 3V, 3.3V,
4.1V, and 5V
 User-enabled Secondary Output Load Switch
 10-Pin, Low-Profile, 2mm x 2mm TDFN Package
APPLICATIONS
Coin Cell-Powered Portable Equipment
Single Cell Li-ion or Alkaline Powered Equipment
Solar or Mechanical Energy Harvesting
Wireless Microphones
Wireless Remote Sensors
RFID Tags
Blood Glucose Meters
Personal Health-Monitoring Devices
ZigBee Radio Enabled Devices
Low-Energy Bluetooth Radio Enabled Devices
DESCRIPTION
The TS3310 is a low power boost switching regulator
with an industry leading low quiescent current of
150nA. The 150nA is the actual current consumed
from the battery while the output is in regulation. The
TS3310’s extremely low power internal circuitry
consumes 90nA on average, with periodic switching
cycles which service the load occurring at intervals of
up to 25 seconds, together yielding the average
150nA. The TS3310 steps up input voltages from
0.9V to 5V to eight selectable output voltages ranging
from 1.8V to 5V. The TS3310 includes two output
options, one being an always-on storage output while
the additional output is an output load switch that is
designed to supply burst-on loads in a low duty cycle
manner. The TS3310 operates in Discontinuous
Conduction Mode with an on-time proportional to
1/VIN, thereby limiting the maximum input current by
the selection of the inductor value, ensuring the input
current does not drag down the input source.
The extremely low quiescent current combined with
the output load switch make the TS3310 an ideal
choice for applications where the load can be
periodically powered from the output, while being
disconnected from the output storage capacitor when
the load is powered off to isolate the load’s leakage
current.
The TS3310 is fully specified over the -40°C to +85°C
temperature range and is available in a low-profile,
thermally-enhanced 10-pin 2x2mm TDFN package
with an exposed back-side paddle.
TYPICAL APPLICATION CIRCUIT
L
C_IN = C_STORE
C_LSW
Circuit A
10µH
PN: CBC3225T100KR
22 µF
220pF
Circuit B
100µH
PN: CBC3225T101KR
2.2 µF
---
Efficiency vs STORE Current
IN=1.2V, STORE=3V
100
90
Circuit B
80
70
Circuit A
60
50
40
30
20
10
0
0.0001 0.001 0.01 0.1 1
I_STORE - mA
10 100
Page 1
© 2016 Silicon Laboratories, Inc. All rights reserved.