IR3897MTRPBF International Rectifier, IR3897MTRPBF Datasheet - Page 8

• Manufacturer Part Number: IR3897MTRPBF
• Description: 4A Highly Integrated Single-Input Voltage, Synchronous Buck Regulator in a PQFN package.
• Manufacturer: International Rectifier

Specifications of IR3897MTRPBF

• Part Status: Active and Preferred
• Package: PQFN / 4 x 5
• Circuit: Single Output
• Iout (a): 4
• Switch Freq (khz): 0 - 1500
• Input Range (v): 1.0 - 16
• Output Range (v): 0.5 - 12
• Pbf: PbF Option Available

Soft Start/Stop
Power Good
Under‐Voltage Lockout
Over‐Voltage Protection
Vref Margining Voltage
Sink Current
Source Current
Vref Comparator Threshold
Soft Start Ramp Rate
Soft Stop Ramp Rate
S_Ctrl Threshold
Power Good Turn on Threshold
Power Good Lower Turn off
Threshold
Power Good Turn on Delay
Power Good Upper Turn off
Threshold
PGood Comparator Delay
PGood Voltage Low
Tracker Comparator Upper
Threshold
Tracker Comparator Lower
Threshold
Tracker Comparator Delay
Vcc‐Start Threshold
Vcc‐Stop Threshold
Enable‐Start‐Threshold
Enable‐Stop‐Threshold
Enable Leakage Current
OVP Trip Threshold
OVP Comparator Dely
PARAMETER
8
FEBRUARY 02, 2012 |DATA SHEET | Rev 3.2
Single‐Input Voltage, Synchronous Buck Regulator
Ramp(SS_start)
Enable_UVLO_Start
OVP_Tdly
Ramp(SS_stop)
Tdelay(tracker) Vp Rising, Vref < 0.1V,see
Enable_UVLO_Stop
VPG(tracker_
VPG(tracker_
VPG(on)_Dly
Vref_disable
Vref_enable
VPG(comp)_
V
V
VPG(upper)
PG(voltage)
VPG(lower)
Vref_marg
CC
Isink_Vref
CC
Isrc_Vref
OVP_Vth
SYMBOL
VPG(on)
_UVLO_Start
_UVLO_Stop
upper)
lower)
High
Low
Dly
Ien
- 8 -
Vref = 0.6V
Vref = 0.4V
Vref pin connected externally
Vsns Rising, 0.4V < Vref < 1.2V
Vsns Rising, Vref < 0.1V
Vsns Falling, 0.4V < Vref < 1.2V
Vsns Falling, Vref < 0.1V
Vsns Rising,see VPG(on)
Vsns Rising, 0.4V < Vref < 1.2V
Vsns Rising, Vref < 0.1V
Vsns < VPG(lower) or
Vsns > VPG(upper)
IPgood
Vp Rising, Vref < 0.1V
Vp Falling, Vref < 0.1V
VPG(tracker_upper)
Vcc Rising Trip Level
Vcc Falling Trip Level
Supply ramping up
Supply ramping down
Enable = 3.3V
Vsns Rising, 0.45V < Vref < 1.2V
Vsns Rising, Vref < 0.1V
4A Highly Integrated SupIRBuck
= ‐5mA
CONDITIONS
‐0.24
MIN
12.7
12.7
0.16
1.14
0.95
115
115
115
115
0.4
0.4
2.4
85
4.0
3.7
85
85
80
1
1
TM
16.0
16.0
1.28
1.28
TYP
‐0.2
120
120
120
120
0.2
4.2
1.2
0.4
0.3
3.9
90
90
85
85
2
1
2
IR3897
MAX
‐0.16
19.3
19.3
0.15
0.24
1.26
1.05
125
125
125
125
1.2
0.6
95
3.5
0.5
4.4
4.1
3.5
95
95
90
1
PD‐97663
mV/µs
% Vref
% Vref
% Vref
% Vref
UNIT
% Vp
% Vp
% Vp
% Vp
ms
ms
µA
µA
µs
µs
V
V
V
V
V
V
V