EVALA5970D STMicroelectronics, EVALA5970D Datasheet - Page 5

• Manufacturer Part Number: EVALA5970D
• Description: Power Management Modules & Development Tools EVAL BOARD A5970D Auto Grade
• Manufacturer: STMicroelectronics
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of EVALA5970D

• Input Voltage: 4.4 V to 36 V
• Output Voltage: 1.235 V to 35 V
• Board Size: 23 mm x 20 mm
• Product: Power Management Modules
• Supply Current: 1 A
• Dimensions: 23 mm x 20 mm
• For Use With/related Products: AN1330
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN1330
1
1.1
1.2
Pin functions
Pin description
Table 1.
Block diagram
Figure 4.
N. Name
1
2
3
4
5
6
7
8
COMP E/A output to be used for frequency compensation
SYNC
V
GND
OUT
V
INH
FB
REF
CC
COMP
SYNC
INH
FB
Regulator output
Master/slave synchronization. When open, a signal synchronous with the turn-OFF of
the internal power is present. When connected to an external signal at a frequency
higher than the internal one, then the device is synchronized by the external signal.
Connecting the SYNC pins of two devices, the one with the higher frequency works as
master and the other one works as slave.
A logical signal (active high) disables the device. With an IHN higher than 2.2 V the
device is OFF and with an INH lower than 0.8 V, the device is ON.
If INH is not used the pin must be grounded. When it is open, an internal pull-up
disables the device.
Step-down feedback input. Connecting the output voltage directly to this pin results in
an output voltage of 1.235 V. An external resistor divider is required for higher output
voltages (the typical value for the resistor connected between this pin and ground is
4.7 k).
Reference voltage of 3.3 V. No filter capacitor is needed for stability
Ground
Unregulated DC input voltage.
Pin description
Block diagram
1.235V
TRIMMING
INHIBIT
+
-
OSCILLATOR
E/A
+
-
PWM
VOLTAGES
MONITOR
SHUTDOWN
THERMAL
Description
CURRENT LIMIT
GND
PEAK TO PEAK
1.235V 3.5V
D
Ck
SUPPLY
Q
FREQUENCY
SHIFTER
DRIVER
VCC
OUT
LPDMOS
POWER
BUFFER
V
REF
AM00003v1
Pin functions
V REF
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