ADP3154JRU-REEL Analog Devices Inc, ADP3154JRU-REEL Datasheet - Page 3

• Manufacturer Part Number: ADP3154JRU-REEL
• Description: IC PS DUAL PENTIUM III 20-TSSOP
• Manufacturer: Analog Devices Inc

Specifications of ADP3154JRU-REEL

• Rohs Status: RoHS non-compliant
• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP

Pin No.
1–4, 20
5
6
7
8, 18
9
10
11
12
13
14
15
16
17
19
ABSOLUTE MAXIMUM RATINGS*
Input Supply Voltage (V
Shutdown Input Voltage . . . . . . . . . . . . . . . . –0.3 V to +16 V
Operating Ambient Temperature Range . . . . . 0 C to +70 C
Junction Temperature Range . . . . . . . . . . . . . 0 C to +150 C
Storage Temperature Range . . . . . . . . . . . . –65 C to +150 C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300 C
*This is a stress rating only; operation beyond these limits can cause the device to
Model
ADP3154JRU
REV. A
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADP3154 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
be permanently damaged.
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 C/W
Mnemonic
VID1–VID4,
VID0
AGND
SD
FB
NC
VLDO
SENSE–
SENSE+
C
CMP
PWRGD
V
DRIVE2
DRIVE1
PGND
T
CC
Temperature
Range
0 C to +70 C
ORDERING GUIDE
CC
) . . . . . . . . . . . . . . –0.3 V to +16 V
Function
Voltage Identification DAC Inputs. These pins are pulled up to an internal reference, providing a
logic one if left open. The DAC output programs the SENSE–regulation voltage from 1.3 V to 3.5 V.
Leaving all five DAC inputs open results in placing the ADP3154 into shutdown.
Analog Ground. All internal signals of the ADP3154 are referenced to this ground.
Shutdown. A logic high will place the ADP3154 in shutdown and disable both outputs. This pin is
internally pulled down.
This pin is the feedback connection for the linear controller. Connect to the resistor divider network to
set its output voltage.
No Connect.
Gate Drive for the Linear Regulator N-channel MOSFET.
Connects to the internal resistor divider that senses the output voltage. This pin is also the reference
input for the current comparator.
The (+) input for the current comparator. The output current is sensed as a voltage at this pin with
respect to SENSE–.
External capacitor C
Error Amplifier output and compensation point. The voltage at this output programs the output cur-
rent control level between the SENSE pins.
Power Good. An open drain signal indicates that the output voltage is within a 5% regulation band.
Supply Voltage to ADP3154.
Gate Drive for the (bottom) synchronous rectifier N-channel MOSFET. The voltage at DRIVE2
swings from ground to V
Gate Drive for the buck switch N-channel MOSFET. The voltage at DRIVE1 swings from ground to
V
Power Ground. The drivers turn off the buck and synchronous MOSFETs by discharging their gate
capacitances to this pin. PGND should have a low impedance path to the source of the synchronous
MOSFET.
CC
.
Package
Description
Thin Shrink Small RU-20
Outline (TSSOP)
PIN FUNCTION DESCRIPTIONS
T
connection to ground sets the off time of the device.
Package
Option
CC
.
–3–
SENSE–
PIN CONFIGURATION
AGND
VLDO
VID1
VID2
VID3
VID4
SD
NC
FB
NC = NO CONNECT
10
1
2
3
4
5
6
7
8
9
(Not to Scale)
ADP3154
TOP VIEW
WARNING!
19
18
17
16
15
14
13
12
11
20
VID0
PGND
NC
DRIVE1
DRIVE2
V
PWRGD
CMP
C
SENSE+
CC
T
ESD SENSITIVE DEVICE
ADP3154