ADP3196 データシートの表示（PDF） - ON Semiconductor
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ADP3196 Datasheet PDF : 18 Pages
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PIN CONFIGURATION AND FUNCTION DESCRIPTION
EN 1
PWRGD 2
FBRTN 3
FB 4
COMP 5
SS 6
DELAY 7
VRM_OFF 8
VRMHOT 9
TTSENSE 10
PIN 1
INDICATOR
ADP3196
TOP VIEW
(Not to Scale)
30 PWM1
29 PWM2
28 PWM3
27 PWM4
26 NC
25 SW1
24 SW2
23 SW3
22 SW4
21 IMON
ADP3196
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED EPAD ON BOTTOM SIDE OF PACKAGE IS AN
ELECTRICAL CONNECTION AND SHOULD BE SOLDERED TO GROUND.
Figure 5. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description
1
EN
Power Supply Enable Input. Pulling this pin to GND disables the PWM outputs and pulls the PWRGD output low.
2
PWRGD
Power-Good Output. Open-drain output that signals when the output voltage is outside of the proper
operating range.
3
FBRTN
Feedback Return. VID DAC and error amplifier reference for remote sensing of the output voltage.
4
FB
Feedback Input. Error amplifier input for remote sensing of the output voltage. An external resistor between
this pin and the output voltage sets the no load offset point.
5
COMP
Error Amplifier Output and Compensation Point.
6
SS
Soft Start Delay Setting Input. An external capacitor connected between this pin and GND sets the soft start
ramp-up time and the VID on-the-fly slew rate.
7
DELAY
Delay Timer Setting Input. An external capacitor connected between this pin and GND sets the overcurrent
latch-off delay time, EN delay time, and PWRGD delay time.
8
VRM_OFF VRM_OFF Signal. Open-drain output that asserts when the temperature at the monitoring point connected to
TTSENSE exceeds the VRM_OFF threshold.
9
VRMHOT
Open-drain output that signals when the temperature at the monitoring point connected to TTSENSE exceeds
the maximum operating temperature. For example, this can be connected to the PROCHOT# (a PC system
signal) output from the CPU.
10
TTSENSE
VR Hot Thermal Throttling Sense Input. An NTC thermistor between this pin and GND is used to remotely sense
the temperature at the desired thermal monitoring point.
11
ILIMIT
Current Limit Setpoint. An external resistor from this pin to GND sets the current limit threshold of the
converter.
12
RT
Frequency Setting Resistor Input. An external resistor connected between this pin and GND sets the oscillator
frequency of the device.
13
RAMPADJ PWM Ramp Current Input. An external resistor from the converter input voltage to this pin sets the internal
PWM ramp.
14
LLSET
Output Load Line Programming Input. This pin can be directly connected to CSCOMP, or it can be connected to
the center point of a resistor divider between CSCOMP and CSREF. Connecting LLSET to CSREF disables
positioning.
15
CSREF
Current Sense Reference Voltage Input. The voltage on this pin is used as the reference for the current sense
amplifier and the power-good and crowbar functions. This pin should be connected to the common point of
the output inductors.
16
CSSUM
Current Sense Summing Node. External resistors from each switch node to this pin sum the average inductor
currents together to measure the total output current.
17
CSCOMP
Current Sense Compensation Point. A resistor and capacitor from this pin to CSSUM determines the gain of the
current sense amplifier and the positioning loop response time.
Rev. 1 | Page 7 of 18 | www.onsemi.com
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