ISL8009AIRZ-TK Intersil, ISL8009AIRZ-TK Datasheet - Page 4

• Manufacturer Part Number: ISL8009AIRZ-TK
• Description: IC REG SYNC BUCK 1.5A 8-DFN
• Manufacturer: Intersil
• Type: Step-Down (Buck)r

Specifications of ISL8009AIRZ-TK

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5.5 V
• Current - Output: 1.5A
• Frequency - Switching: 1.6MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Electrical Specifications
NOTES:
POR
Output Low Voltage
Delay Time
POR Pin Leakage Current
Minimum Supply Voltage for Valid POR
Signal
Internal PGOOD Low Rising Threshold
Internal PGOOD Low Falling Threshold
Internal PGOOD High Rising Threshold
Internal PGOOD High Falling Threshold
Internal PGOOD Delay Time
EN, SKIP, RSI
Logic Input Low
Logic Input High
Logic Input Leakage Current
Thermal Shutdown
Thermal Shutdown Hysteresis
6. Limits established by characterization and are not production tested.
7. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
Pin Descriptions
VIN
Input supply voltage. Connect a 10µF ceramic
capacitor to power ground.
EN
Regulator enable pin. Enable the output when driven to
high. Shutdown the chip and discharge output
capacitor when driven to low. Do not leave this pin
floating.
POR
2ms timer output. At power-up or EN HI, this output is
a 2ms delayed Power-Good signal for the output
voltage. This output can be reset by a low RSI signal.
2ms starts when RSI goes to high.
SKIP
Mode Selection pin. Connect to logic high or input
voltage VIN for PFM mode; connect to logic low or
ground for forced PWM mode. Do not leave this pin
floating.
LX
Switching node connection. Connect to one terminal of
inductor.
characterization and are not production tested.
PARAMETER
4
Typical specifications are measured at the following conditions: T
RSI = SKIP = 0V, V
Applications” on page 9. (Continued)
SYMBOL
Sinking 1mA, VFB = 0.7V
POR = VIN = 3.6V
Percentage of nominal regulation voltage
Percentage of nominal regulation voltage
Percentage of nominal regulation voltage
Percentage of nominal regulation voltage
Pulled up to 5.5V
IN
= 5V, L = 2.2µH, C
ISL8009A
TEST CONDITIONS
GND
System ground.
VFB
Buck regulator output feedback. Connect to the output
through a resistor divider for adjustable output voltage
(ISL8009A-ADJ). For preset output voltage, connect
this pin to the output.
RSI
This input resets the 2ms timer. When the output
voltage is within the PGOOD window, an internal timer
is started and generates a POR signal 2ms later when
RSI is low. A high RSI resets POR and RSI high to low
transition restarts the internal counter if the output
voltage is within the window, otherwise the counter is
reset by the output voltage condition.
Exposed Pad
The exposed pad must be connected to the GND pin for
proper electrical performance. The exposed pad must
also be connected to as much as possible for optimal
thermal performance.
1
= C
2
= 20µF, I
OUT
= 0A to 1.5A. See “Typical
(Note 7) TYP
A
MIN
89.5
108
104
1.2
1.4
85
= +25°C, EN = VIN,
-
-
-
-
-
-
-
-
0.01
112
107
140
6.5
0.1
25
92
88
2
-
-
-
-
(Note 7) UNITS
November 19, 2009
MAX
94.5
114
110
0.3
0.1
0.4
91
1
-
-
-
-
-
-
FN6656.2
ms
µA
µA
°C
°C
%
%
%
%
µs
V
V
V
V