ROHS AMS2027 Technical data
http://www.BDTIC.com/AMS
Advanced AMS2027
Monolithic SINGLE POWER DISTRIBUTION SWITCH
Systems
RoHS compliant
PRELIMINARY INFORMATION
FEATURES
• 110mΩ Typical (5V Input) High Side MOSFET Switch • 100µA Maximum On-State Supply Current
• Short Circuit Protection • Available Active-High or Active-Low Enable
• Logic Overcurrent Output Error Flag • Available in Space Saving 8 lead SOIC and 8 Lead PDIP
• Logic Undervoltage Output Error Flag
• Logic Overheat Output Error Flag
• Enable Input Compatible With 3V and 5V Logic
• Controlled Rise and Fall Times Limit Current • USB Power Management
Surges and Minimize EMI
• Undervoltage Lock-Out Guarantees the Switch is • Battery-Charger Circuits
Off At Start-up
PRODUCT DESCRIPTION
The AMS2027 is a power distribution switch intended for application where heavy capacitive loads and short-circuits are
likely to be encountered. The high-side switch is a 110mΩ N-channel MOSFET. The switch is controlled by a logic enable
input compatible with 3V and 5V logic and is available in active-high or active-low enable. The internal charge pump,
designed to control the power switch rise and fall time to minimize current surges during switching, also provides the gate
drive. Requiring no external components the charge pump allows operation from supplies as low as 3.3V. When an overload
or a short circuit is encountered the AMS2027 limits the output current to a safe level by switching into a constant-current
mode and the overcurrent logic output error flag is set to a low. The po wer dissipation in the switch will be increased by
continuous heavy overloads and short circuits; this will cause the junction temperature to rise. The thermal protection circuit
shuts the power switch off to prevent damage. Once the device has cooled sufficiently, it will turn on automatic. An under
voltage lock-out is provided to insure that the power switch is in th e Off state at start-up.
The AMS2027 is offered in the 8 lead SOIC package and the 8 lead PDIP package and is rated operational over a -40°C to
85°C temperature range.
ORDERING INFORMATION PIN CONNECTIONS
PACKAGE TYPE OPER. TEMP
8 LEAD SOIC 8 LEAD PDIP
AMS2027S AMS2027P
RANGE
-40°C to 85°C
APPLICATIONS
• Hot Plug-In Power Supplies
8 LEAD SOIC/ 8LEAD PDIP
ENABLE
ERROR
GROUND
N/C
1
2
3
4
8
OUTPUT
7
INPUT
6 OUTPUT
5
N/C
Advanced Monolithic Systems, Inc.
http://www.BDTIC.com/AMS
AMS2027
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Voltage Range, VI -0.3V to 7V Internal Power Dissipation (Note 3) Internally Limited
Output Voltage Range, V
-0.3V to V
O
+0.3V
Input Voltage Range, V
Continuos Output Current, I
at /EN -0.3V to 7V Storage Temperature
I
Lead Temperature (Soldering 25 sec)
O
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at TJ=25°C, V
PARAMETER
Switch On-State Resistance V
V
V
V
Switch Output Leakage Current /EN = VI 0.01 5
Switch Output Rise Time
Switch Output Fall Time
= 5.5V 75 95
I(IN)
= 5.0V 80 95
I(IN)
= 4.5V 90 110
I(IN)
= 4.0V 96 110
I(IN)
/EN = V
= 5.5V, CL = 1µF
V
I(IN)
= 2.7V, CL = 1µF
V
I(IN)
= 5.5V, CL = 1µF
V
I(IN)
= 5.5V, IO =rated current, /EN = 0V unless otherwise specified.
I(IN)
CONDITIONS
(Note 2)
, -40°C ≤ TJ ≤ 85°C
I
Maximum Junction Temperature
I(IN)
Min.
10
4.0 ms
3.8 ms
3.9 ms
AMS2027
Typ.
+125°C
-65°C to +150°C
265°C
Units
Max.
mΩ
mΩ
mΩ
mΩ
µA
µA
Enable High-Level Input
Voltage
Enable Low-Level Input Voltage
Enable Input Current /EN = 0V or /EN = VI -1.0 1.0
Enable Delay Time, Low-toHigh Output
Short Circuit Current V
Supply Current, Low-Level
Output
Supply Current, High-Level
Output
Undervoltage lock-out LowLevel Input Voltage
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test
conditions, see the Electrical Characteristics tables.
Note 2: To ensure constant junction temperature, low duty cycle pulse testing is used; thermal effects must be taken in consideration separately.
Note 3: The Power Dissipation for the SO-8 package is 725mW at T
= 70 °C P
= 464mW ; for TA = 125 °C PD = 145mW)
D
= 2.7V, CL = 1µF
V
I(IN)
4.0V ≤ V
4.0V ≤ V
C
C
OUT Connected to GND, device enable into
short circuit
/EN = VI , TJ=25°C
/EN = V
/EN = 0V, TJ=25°C
/EN = 0V, -40°C ≤ T
2.0 3.0 3.2 V
≤ 5.5V
I
≤ 5.5V
I
= 1µF
L
= 1µF
L
= 5.5V, TJ=25°C
I(IN)
, -40°C ≤ TJ ≤ 85°C
I
≤ 85°C
J
= 25 °C. Above TA = 25 °C the Power Dissipation must be derated at 5.8mW/ °C (for TA
A
3.5 ms
2.4 V
.06 V
µA
20
40
0.66 1.2 1.8 A
0.015 10
10
73 100
100
ms
ms
µA
µA
µA
µA
RECOMENDED OPERATING CONDITIONS:
Min Max
Input Voltage, VI 4.0V 5.5V
Input Voltage, VI at /EN 0V 5.5V
Continuous Output Current, IO 0A 0.6A
Operating Junction Temp. Range -40°C +125°C
Advanced Monolithic Systems, Inc.
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