ADP1873ARMZ-0.3-R7 Analog Devices Inc, ADP1873ARMZ-0.3-R7 Datasheet - Page 6

• Manufacturer Part Number: ADP1873ARMZ-0.3-R7
• Description: 300kHz, Light Load Eff Enabled
• Manufacturer: Analog Devices Inc

Specifications of ADP1873ARMZ-0.3-R7

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 300kHz
• Duty Cycle: 84%
• Voltage - Supply: 2.75 V ~ 20 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Frequency-max: 300kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADP1873ARMZ-0.3-R7TR

ADP1872/ADP1873
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
Mnemonic
VIN
COMP/EN
FB
GND
VDD
DRVL
PGND
DRVH
SW
BST
High Input Voltage. Connect VIN to the drain of the upper-side MOSFET.
Output of the Internal Error Amplifier/IC Enable. When this pin functions as EN, applying 0 V to this pin disables the IC.
Analog Ground Reference Pin of the IC. All sensitive analog components should be connected to this ground
plane (see the Layout Considerations Section).
Bias Voltage Supply for the ADP1872/ADP1873 Controller (Includes the Output Gate Drivers). A bypass capacitor
of 1 μF directly from this pin to PGND and a 0.1 μF across VDD and GND are recommended.
Drive Output for the External Lower Side, N-Channel MOSFET. This pin also serves as the current-sense gain
setting pin (see Figure 68).
Power GND. Ground for the lower side gate driver and lower side, N-channel MOSFET.
Switch Node Connection.
Bootstrap for the Upper Side MOSFET Gate Drive Circuitry. An internal boot rectifier (diode) is connected
between VDD and BST. A capacitor from BST to SW is required. An external Schottky diode can also be
connected between VDD and BST for increased gate drive capability.
Description
Noninverting Input of the Internal Error Amplifier. This is the node where the feedback resistor is connected.
Drive Output for the External Upper Side, N-Channel MOSFET.
COMP/EN
GND
VDD
VIN
FB
Figure 3. Pin Configuration
Rev. A | Page 6 of 40
1
2
3
4
5
(Not to Scale)
ADP1872
TOP VIEW
10
9
8
7
6
BST
SW
DRVH
PGND
DRVL