ADMOS AMS2027S, AMS2027P Datasheet

Advanced AMS2027
Monolithic SINGLE POWER DISTRIBUTION SWITCH
Systems

PRELIMINARY INFORMATION

FEATURES

•• 110mΩΩ Typical (5V Input) High Side MOSFET Switch •• 100µµA 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 power 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 the Off state at start-up.

APPLICATIONS

•• Hot Plug-In Power Supplies

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

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. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

ABSOLUTE MAXIMUM RATINGS (Note 1)

Input Voltage Range, V
Output Voltage Range, V

I

O

-0.3V to V
Input Voltage Range, VI at /EN -0.3V to 7V Storage Temperature
Continuos Output Current, I

O

-0.3V to 7V Internal Power Dissipation (Note 3) Internally Limited
+0.3V Maximum Junction Temperature

I(IN)

Lead Temperature (Soldering 10 sec)

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at TJ=25°C, V

= 5.5V, IO =rated current, /EN = 0V unless otherwise specified.

I(IN)

AMS2027

+125°C

-65°C to +150°C
260°C

PARAMETER CONDITIONS

(Note 2)

Switch On-State Resistance V

Switch Output Leakage Current /EN = V

Switch Output Rise Time

Switch Output Fall Time

Enable High-Level Input Voltage

Enable Low-Level Input Voltage

Enable Input Current /EN = 0V or /EN = V

Enable Delay Time, Low-to-High
Output

Short Circuit Current V

Supply Current, Low-Level
Output

Supply Current, High-Level
Output

Undervoltage lock-out Low-Level
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 TA = 25 °C. Above TA = 25 °C the Power Dissipation must be derated at 5.8mW/ °C (for TA =

70 °C PD = 464mW ; for TA = 125 °C PD = 145mW)

= 5.5V 75 95

I(IN)

V

= 5.0V 80 95

I(IN)

V

= 4.5V 90 110

I(IN)

V

= 4.0V 96 110

I(IN)

I

/EN = VI , -40°C ≤ TJ ≤ 85°C
V

= 5.5V, CL = 1µF

I(IN)

V

= 2.7V, CL = 1µF

I(IN)

V

= 5.5V, CL = 1µF

I(IN)

V

= 2.7V, CL = 1µF

I(IN)

4.0V ≤ VI ≤ 5.5V

4.0V ≤ VI ≤ 5.5V

I

CL = 1µF
CL = 1µF

= 5.5V, TJ=25°C

I(IN)

OUT Connected to GND, device enable into
short circuit

/EN = VI , TJ=25°C
/EN = VI , -40°C ≤ TJ ≤ 85°C
/EN = 0V, TJ=25°C
/EN = 0V, -40°C ≤ TJ ≤ 85°C

Min.

2.4 V

-1.0 1.0

0.66 1.2 1.8 A

2.0 3.0 3.2 V

AMS2027

Typ.

0.01 5

4.0 ms

3.8 ms

3.9 ms

3.5 ms

0.015 10

73 100

Max.

10

.06 V

20
40

10

100

Units

mΩ
mΩ
mΩ
mΩ

µA
µA

µA

ms
ms

µA
µA
µA
µA

RECOMENDED OPERATING CONDITIONS:

Min Max

Input Voltage, V

I

4.0V 5.5V
Input Voltage, VI at /EN 0V 5.5V
Continuous Output Current, I

O

0A 0.6A

Operating Junction Temp. Range -40°C +125°C

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]