mic38150 Micrel Semiconductor, mic38150 Datasheet - Page 2

• Manufacturer Part Number: mic38150
• Description: Heldo 1.5a High Efficiency Low Dropout Regulator
• Manufacturer: Micrel Semiconductor

Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
September 2009
Part Number
MIC38150HYHL
Note: For additional voltage options, contact Micrel.
6, 23, 24, 25,
Pin Number
1, 2, 3, 4, 5
26, 27, 28
19, 20, 21
12, 13
14, 15
16, 17
7, 22
10
11
18
8
9
Pin Name
LDOOUT
LDOIN
AGND
PGND
ePAD
SWO
AVIN
PVIN
LPF
SW
FB
EN
Current
Output
1.5A
Pin Name
Switch (Output): This is the output of the PFM Switcher.
Switch Node: Attach external resistor from LPF to increase hysteretic
frequency.
Exposed heat-sink pad: Connect externally to PGND.
Analog Supply Voltage: Supply for the analog control circuitry. Requires
bypass capacitor to ground. Nominal bypass capacitor is 1µF.
Low Pass Filter: Attach external resistor from SW to increase hysteretic
frequency.
Analog Ground.
Feedback: Input to the error amplifier. Connect to the external resistor divider
network to set the output voltage.
LDO Output: Output of voltage regulator. Place capacitor-to-ground to bypass
the output voltage. Nominal bypass capacitor is 10µF.
LDO Input: Connect to SW output. Requires a bypass capacitor-to-ground.
Nominal bypass capacitor is 10µF.
Input Supply Voltage (Input): Requires bypass capacitor-to-ground. Nominal
bypass capacitor is 10µF.
Enable (Input): Logic low will shut down the device, reducing the quiescent
current to less than 50µA. This pin can also be used as an under-voltage
lockout function by connecting a resistor divider from EN pin-to-VIN and
GND. It should be not left open.
Power Ground.
Voltage
28-Pin 4mm x 6mm MLF
ADJ
(1)
(Top View)
2
Temperature Range
-40°C to +125°C
Junction
®
(ML)
Package
PB-Free 28-Pin 4mm×6mm MLF
M9999-091109-B
MIC38150
®