参数资料
型号: MAX1993ETG+T
厂商: Maxim Integrated Products
文件页数: 3/36页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 24-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: Quick-PWM™
PWM 型: 电流模式
输出数: 1
频率 - 最大: 600kHz
占空比: 100%
电源电压: 4.5 V ~ 5.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 24-WFQFN 裸露焊盘
包装: 带卷 (TR)
Quick-PWM Step-Down Controllers with Inductor
Saturation Protection and Dynamic Output Voltages
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V CC = V DD = SHDN = 5V, SKIP = GND, T A = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TON = GND (600kHz)
170
194
219
On-Time
t ON
V+ = 15V,
V OUT = 1.5V
(Note 3)
TON = REF (450kHz)
TON = open (300kHz)
213
316
243
352
273
389
ns
TON = V CC (200kHz)
461
516
571
Minimum Off-Time
t OFF(MIN)
(Note 3)
400
500
ns
FB forced above the regulation point,
LSAT = GND
0.55
0.85
Quiescent Supply Current (V CC )
I CC
FB forced above the regulation point,
V LSAT > 0.5V
1
mA
Quiescent Supply Current (V DD )
I DD
FB forced above the regulation point
<1
5
μA
Quiescent Supply Current (V+)
Shutdown Supply Current (V CC )
Shutdown Supply Current (V DD )
Shutdown Supply Current (V+)
I V+
SHDN = GND
SHDN = GND
SHDN = GND, V+ = 28V,
V CC = V DD = 0 or 5V
25
<1
<1
<1
40
7
5
5
μA
μA
μA
μA
REFERENCE
Reference Voltage
Reference Load Regulation
V REF
Δ V REF
V CC = 4.5V to 5.5V,
I REF = 0
I REF = -10μA to 50μA
T A = +25°C to +85°C
T A = 0°C to +85°C
1.986
1.983
-0.01
2
2
2.014
2.017
+0.01
V
V
REF Lockout Voltage
REFIN Voltage Range
V REF(UVLO) Rising edge, hysteresis = 350mV
0.7
1.95
V REF
V
V
REFIN Input Bias Current
I REFIN
0.01
0.05
μA
FAULT DETECTION
Overvoltage Trip Threshold
Overvoltage Fault Propagation
Delay
Output Undervoltage Protection
Trip Threshold
t OVP
With respect to error comparator threshold,
OVP/UVP = V CC
FB forced 2% above trip threshold
With respect to error comparator threshold,
OVP/UVP = V CC
12
65
16
10
70
20
75
%
μs
%
Output Undervoltage Protection
Blanking Time
Output Undervoltage Fault
Propagation Delay
t BLANK
t UVP
From rising edge of SHDN
10
10
35
ms
μs
PGOOD Lower Trip Threshold
PGOOD Upper Trip Threshold
PGOOD Propagation Delay
t PGOOD
With respect to error comparator threshold,
hysteresis = 1%
With respect to error comparator threshold,
hysteresis = 1%
FB forced 2% beyond PGOOD trip
threshold
-13
+7
-10
+10
10
-7
+13
%
%
μs
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3
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