Dual push-button
on/off controllers
Allows safe and easy power control
The STM6600 and STM6601
devices are smart push-
button on/off controllers that
enable designers to improve
the user experience of battery-
powered devices such as
e-books, mobile internet devices,
digital cameras, media players,
handheld medical equipment
and numerous portable devices.
They enable and disable power
for the application depending
on push-button states, signals
from the processor, and battery
voltage.
If the battery is excessively
discharged or a fault is detected
in the power supply, the IC blocks
power-up. The ICs also implement
smart-reset capabilities to enable
users to safely recover devices
that have frozen or crashed.
They feature a very low current
consumption of 6 μA in normal
operation and only 1 μA during
standby.
KEY FEATURES
•
perating voltage: 1.6 to 5.5 V
O
•
ow standby current: 1 μA
L
•
djustable Smart Reset™ assertion delay
A
KEY BENEFITS
•
Secure start-up, or power-down driven by
time driven by external capacitor
•
Fixed time power-up duration (STM6601)
or push-button power-up duration
(STM6600)
•
ebounced push-button
D
•
SD inputs protections:
E
•
up to ±15 kV (air discharge)
•
±8 kV (contact discharge)
•
ctive-high or active-low enable output
A
•
attery monitoring feature
B
•
.5 V voltage reference with 1% accuracy
1
•
ndustrial operating temperature:
I
-40 to +85 °C
•
vailable in TDFN12 (2 x 3 mm) package
A
push button or by application
•
Secure reset or power-down in case of
non-responding application
•
Customizable according to specific
application requirements
TARGETED APPLICATIONS
•
martphones
S
•
ablets
T
•
mart watches
S
•
earable / IoT devices
W
•
ultimedia players
M
•
ctivity trackers
A
•
P3 players
M
•
ortable navigation devices
P
www.st.com/reset
APPLICATION SETUP DIAGRAM
DC-DC converter
or power MOSFET
+
R1
LED
VCC
PB
CSR
SR
GND
CSR
VCC
R3
R4
R5
VDD
RST
I/O
NMI or INT
I/O
SR
MCU
CPU
BASEBAND
EN (EN)
RST
KILL
STM6600
STM6601
INT
PBOUT
VREF
1% accurate
CSRD
CSRD
CREF
SMART ON/OFF CONTROLLER PRODUCT RANGE
Threshold voltage options (V)
Part number
I/O response options
Power-on
EN output is active high, long push asserts RST
EN output active low, long push asserts RST
EN output active high, long push deasserts EN
EN output active low, long push deasserts EN
EN output is active high, long push asserts RST
EN output active low, long push asserts RST
EN output active high, long push deasserts EN
EN output active low, long push deasserts EN
Power-off
Blanking time
options (s)
Package
STM6600
2.50, 3.30, 3.40, 3.50
2.0, 3.10, 3.20, 3.30
5.6, 11.2
TDFN12
STM6601
3.10, 3.30, 3.40, 3.50
2.90, 3.10, 3.20, 3.30
1.4, 5.6
TDFN12
STM6600: PB must be held low until PSHOLD confirmation
STM6601: PB can be released before PSHOLD confirmation
© STMicroelectronics - February 2015 - Printed in United Kingdom - All rights reserved
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies
All other names are the property of their respective owners
Order code: FLSTM66XX0215
For more information on ST products and solutions, visit www.st.com
Analog electronics
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