MIC2025-2YM Micrel Inc, MIC2025-2YM Datasheet - Page 10

• Manufacturer Part Number: MIC2025-2YM
• Description: IC SW DISTRIBUTION 1CHAN 8SOIC
• Manufacturer: Micrel Inc
• Series: MM8™r
• Type: High Side Switchr

Specifications of MIC2025-2YM

• Current Limit: 700mA
• Number Of Outputs: 1
• Rds (on): 140 mOhm
• Internal Switch(s): Yes
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power Load Switch Type: High Side
• Input Voltage: 5.5V
• On State Resistance: 0.09ohm
• Thermal Protection: Yes
• On / Enable Input Polarity: Active Low
• No. Of Outputs: 1
• Short Circuit Current Limit: 700mA
• Input Voltage Range: 2.7 to 5.5V
• Number Of Switches: Single
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1058

Short-Circuit Applied to Enabled Output
When a heavy load or short-circuit is applied, a large transient
current may flow until the current-limit circuitry responds. Once
this occurs the device limits current to less than the short-cir-
cuit current limit specification. See the Short-Circuit Transient
Response graph under Functional Characteristics.
Current-Limit Response—Ramped Load
The MIC2025/75 current-limit profile exhibits a small foldback
effect of about 200mA. Once this current-limit threshold is
exceeded the device switches into a constant current mode.
It is important to note that the device will supply current until
the current-limit threshold is exceeded. See the Current-Limit
Response graph under Functional Characteristics.
MIC2025/2075
V
I
LIMIT
V
V
I
I
V
V
I
LIMIT
I
OUT
OUT
OUT
D C
F L G
V
OUT
E N
I
F L G
DC
E N
Figure 1. MIC2075-2 Timing: Output Reset by Removing Load
Thermal Shutdow n
Thermal Shutdow n
Reached
Reached
Figure 2. MIC2025-2 Timing
Short-Circuit Faul t
Short-Circuit Faul t
t
t
D
D
10
Load/Fault
Removed
Fault Flag
The FLG signal is an N-channel open-drain MOSFET output.
FLG is asserted (active-low) when either an overcurrent
or thermal shutdown condition occurs. In the case where
an overcurrent condition occurs, FLG will be asserted only
after the flag response delay time, t
ensures that FLG is asserted only upon valid overcurrent
conditions and that erroneous error reporting is eliminated.
For example, false overcurrent conditions can occur during
hot-plug events when a highly capacitive load is connected
and causes a high transient inrush current that exceeds the
current-limit threshold. The FLG response delay time t
typically 3ms.
Undervoltage Lockout
Undervoltage lockout (UVLO) prevents the output MOS-
FET from turning on until V
Undervoltage detection functions only when the switch is
enabled.
Load Removed
(Output Reset)
IN
exceeds approximately 2.5V.
D
, has elapsed. This
June 2010
D
is