STEVAL-ISA052V2 STMicroelectronics, STEVAL-ISA052V2 Datasheet - Page 6

• Manufacturer Part Number: STEVAL-ISA052V2
• Description: BOARD EVAL BASED ON PM6675A
• Manufacturer: STMicroelectronics
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of STEVAL-ISA052V2

• Design Resources: STEVAL-ISA052V2 Gerber Files STEVAL-ISA052V2 Schematic STEVAL-ISA052V2 Bill of Material
• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.5V, 0.6 ~ 3.3V
• Voltage - Input: 4.5 ~ 36 V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: PM6675AS
• Input Voltage: 4.5 V to 36 V
• Output Voltage: 1.5 V
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• For Use With/related Products: PM6675AS
• Other names: 497-8413

Pin settings
2.2
6/48
Pin description
Table 2.
N°
10
11
12
13
15
16
17
18
14
1
2
3
4
5
6
7
8
9
NOSKIP
LGATE
COMP
SWEN
SGND
PGND
LGND
VOSC
AVCC
VREF
VSNS
VSEL
LILIM
SPG
VCC
LPG
LEN
LFB
Pin
Pin functions
LDO power ground. Connect to negative terminal of VTT output capacitor.
LDO remote sensing. Connect as close as possible to the load via a low
noise PCB trace.
Pulse-skip/no-audible pulse-skip modes selector.
See
LDO section power-good signal (open drain output). High when LDO output
voltage is within ±10 % of nominal value.
Ground Reference for analog circuitry, control logic and VTTREF buffer.
Connect together with the thermal pad and VTTGND to a low impedance
ground plane. See the Application Note for details.
+5 V supply for internal logic. Connect to +5 V rail through a simple RC
filtering network.
High accuracy output voltage reference (1.237 V) for multilevel pins setting.
It can deliver up to 50 uA. Connect a 100 nF capacitor between VREF and
SGND in order to enhance noise rejection.
Frequency Selection. Connect to the central tap of a resistor divider to set
the desired switching frequency. The pin cannot be left floating. See
Section 7: Device description
Switching section output remote sensing and discharge path during output
soft-end. Connect as close as possible to the load via a low noise PCB
trace.
Fixed output selector and feedback input for the switching controller.
If VSEL pin voltage is higher than 4 V, the fixed 1.5 V output is selected. If
VSEL pin voltage is lower than 4 V, it is used as negative input of the error
amplifier. See
DC voltage error compensation input pin for the switching section.
Refer to Mode of Operation Selection section for more details.
Current limit selector for the LDO. Connect to SGND for ±1 A current limit or
to +5 V for ±2 A current limit.
Switching Controller Enable. When tied to ground, the switching output is
turned off and a soft-end is performed.
Linear Regulator Enable. When tied to ground, the LDO output is turned off
and a soft-end is performed.
Switching Section power-good signal (open drain output). High when the
switching regulator output voltage is within ±10 % of nominal value.
Power ground for the switching section.
Low-side gate driver output.
+5 V low-side gate driver supply. Bypass with a 100 nF capacitor to PGND.
Section 7.1.4: Mode-of-operation selection
Section 7.1.4: Mode-of-operation selection
for details.
Function
for details.
PM6675AS