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RT9711AGB

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
RT9711A/B/C/D
1
DS9711A/B/C/D-03 April 2011 www.richtek.com
80m
ΩΩ
ΩΩ
Ω, 1.5A/0.6A High-Side Power Switches with Flag
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
General Description
The RT9711A/B/C/D are cost-effective, low voltage, single
N-MOSFET high-side power switches, optimized for self-
powered and bus-powered Universal Serial Bus (USB)
applications. The RT9711 series are equipped with a
charge pump circuitry to drive the internal MOSFET switch.
The switch's low R
DS(ON)
, 80mΩ, meets USB voltage drop
requirements. A flag output is available to indicate fault
conditions to the local USB controller.
Additional features include soft-start to limit inrush current
during plug-in, thermal shutdown to prevent catastrophic
switch failure from high-current loads, under-voltage
lockout (UVLO) to ensure that the device remains off
unless there is a valid input voltage present, fault current
is limited to typically 2.5A for RT9711A/B in dual ports
and 1A for RT9711C/D in single port in accordance with
the USB power requirements, lower quiescent current as
25μA making this device ideal for portable battery-operated
equipment.
The RT9711 series are available in SOT-23-5, TSOT-23-5,
SOP-8 and MSOP-8 packages fitting different aspect of
broad applications.
Features
zz
zz
z
Compliant to USB Specifications
zz
zz
z Built-In N-MOSFET
``
``
` Typical R
DS(ON)
: 80m
ΩΩ
ΩΩ
Ω (SOT-23-5 & TSOT-23-5) and
90m
ΩΩ
ΩΩ
Ω (SOP-8 & MSOP-8)
zz
zz
z Output Can Be Forced Higher Than Input (Off-State)
zz
zz
z Low Supply Current :
25
μμ
μμ
μA Typical at Switch On State
1
μμ
μμ
μA Typical at Switch Off State
zz
zz
z Guaranteed 1.5A for RT9711A/B and 0.6A for
RT9711C/D Continuous Load Current
zz
zz
z Wide Input Voltage Ranges : 2.5V to 5.5V
zz
zz
z Open-Drain Fault Flag Output
zz
zz
z Hot Plug-In Application (Soft-Start)
zz
zz
z 1.7V Typical Under-Voltage Lockout (UVLO)
zz
zz
z Current Limiting Protection
zz
zz
z Thermal Shutdown Protection
zz
zz
z Reverse Current Flow Blocking (no body diode)
zz
zz
z Smallest SOT-23-5 and TSOT-23-5 Packages
Minimizes Board Space
zz
zz
z UL Approved
−−
−−
−E219878
zz
zz
z TUV IEC60950-1 : 2005 Certified
zz
zz
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z USB Bus/Self Powered Hubs
z USB Peripherals
z ACPI Power Distribution
z PC Card Hot Swap
z Notebook, Motherboard PCs
z Battery-Powered Equipment
z Hot-Plug Power Supplies
z Battery-Charger Circuits
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Ordering Information
RT9711
Package Type
B : SOT-23-5
BG : SOT-23-5 (G-Type)
J5 : TSOT-23-5
S : SOP-8
F : MSOP-8
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Current/EN Function
A : 1.5A/Active High
B : 1.5A/Active Low
C : 0.6A/Active High
D : 0.6A/Active Low
RT9711A/B/C/D
2
DS9711A/B/C/D-03 April 2011www.richtek.com
Function Block Diagram
Functional Pin Description
Pin Name Pin Function
VIN
Power
Input Voltage
VOUT
Output Voltage
GND
Ground
EN/EN
Chip Enable. Never let this pin floating.
(Active High for RT9711A/C, Active Low
for RT9711B/D)
FLG
Open-Drain Fault Flag Output
Typical Application Circuit
Pin Configurations
(TOP VIEW)
Note: A low-ESR 150μF aluminum electrolytic or tantalum
between V
OUT
and GND is strongly recommended to meet
the 330mV maximum droop requirement in the hub V
BUS
.
(see Application Information Section for further details)
SOT-23-5 (G-Type)
SOP-8/MSOP-8
SOT-23-5/TSOT-23-5
Gate
Control
Output Voltage
Detection
Delay
Oscillator
UVLO
Charge
Pump
Bias
Thermal
Protection
Current
Limiting
VOUT
VIN
GND
EN/EN
FLG
GND
VOUT
VIN
4
23
5
FLG
EN/EN
VOUT
GND NC
VIN
4
23
5
EN/EN
GND
VIN
VIN
VOUT
VOUT
VOUT
2
3
4
5
8
7
6
EN/EN
FLG
VIN
VOUT
GND
RT9711A/B/C/D
+
Over -Current
V
BUS
D+
D-
GND
USB Controller
1µF
150µF
10µF
Supply
Voltage 5V
Pull-Up Resistor (10K to 100K)
Ferrite
Beads
Data
RT9711A/C
Chip Enable
RT9711B/D
Chip Enable
FLG
EN/EN
C
IN
C
OUT
RT9711A/B/C/D
3
DS9711A/B/C/D-03 April 2011 www.richtek.com
Absolute Maximum Ratings (Note 1)
z Supply Voltage --------------------------------------------------------------------------------------------------------- 6.5V
z Chip Enable Input Voltage ------------------------------------------------------------------------------------------- −0.3V to 6.5V
z Flag Voltage ------------------------------------------------------------------------------------------------------------ 6.5V
z Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-5, TSOT-23-5 ------------------------------------------------------------------------------------------------- 0.4W
SOP-8, MSOP-8 ------------------------------------------------------------------------------------------------------- 0.625W
z Package Thermal Resistance (Note 2)
SOT-23-5, TSOT-23-5, θ
JA
------------------------------------------------------------------------------------------- 250°C/W
SOP-8, MSOP-8, θ
JA
------------------------------------------------------------------------------------------------- 160°C/W
z Junction Temperature ------------------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260°C
z Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V
Electrical Characteristics
Recommended Operating Conditions
(Note 4)
z Supply Input Voltage -------------------------------------------------------------------------------------------------- 2.5V to 5.5V
z Chip Enable Input Voltage ------------------------------------------------------------------------------------------- 0V to 5.5V
z Junction Temperature Range ---------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range ---------------------------------------------------------------------------------------- −40°C to 85°C
Parameter Symbol Test Conditions Min Typ Max Units
Switch On
Resistance
(RT9711A/B)
SOT-23-5, TSOT-23-5
R
DS(ON)
I
OUT
= 1A, V
IN
= 5V
-- 80 100
mΩ
SOP-8, MSOP-8 -- 90 110
Switch On
Resistance
(RT9711C/D)
SOT-23-5, TSOT-23-5
I
OUT
= 0.5A, V
IN
= 5 V
-- 80 100
mΩ
S O P-8, M SOP -8 -- 90 11 0
Supply Current
I
SW_ON
switch on, R
LOAD
Open -- 25 45
μA
I
SW_OFF
switch off, R
LOAD
Open
-- 0.1 1
EN /EN
Threshold
Logic-Low Voltage
V
IL
V
IN
= 2.5V to 5.5V
-- -- 0.8 V
Logic-High Voltage V
IH
V
IN
= 2.5V to 5.5V 2.0 -- -- V
EN/EN Input Current
I
EN/EN
V
EN/EN
= 0V to 5.5V
-- 0.01 -- μA
Output Leakage C urrent
I
LEAK
V
EN
= 0V, V
EN
= 5 V, R
LOAD
= 0Ω
-- 0.5 10 μA
Output Turn-On Rise Time
T
ON_RISE
10% to 90% of V
OUT
rising
-- 400 -- us
Current Limit
RT9711A/B
I
LIM
Current Ramp (< 0.1A/ms) on
V
OUT
1.6 2.5 3.2 A
RT9711C/D 0.7 1 1.4 A
(V
IN
= 5V, C
IN
= C
OUT
= 1μF, T
A
= 25°C, unless otherwise specified)
To be continued
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

RT9711AGB

Mfr. #:
Buy RT9711AGB
Manufacturer:
Description:
IC PWR SWITCH USB 1.5A SOT23-5
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